Greetings To The GTALUG Community:

I'm trying to discover where an overlay filesystem is mapped, for a Debian live boot from a USB stick.

After perusing a dog's breakfast of output from various linux commands, I am appealing to GTALUG members for guidance.

* * *
* * *

I boot live Debian 11 linux from a USB memory stick.

This provides an overlay filesystem:
...
user@debian:~$ df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            7.8G     0  7.8G   0% /dev
tmpfs           1.6G  1.6M  1.6G   1% /run
/dev/sdb1       3.5G  3.5G     0 100% /run/live/medium
/dev/loop0 2.9G 2.9G 0 100% /run/live/rootfs/filesystem.squashfs
tmpfs           7.8G  1.6G  6.3G  20% /run/live/overlay
overlay         7.8G  1.6G  6.3G  20% /
tmpfs           7.8G     0  7.8G   0% /dev/shm
tmpfs           5.0M  4.0K  5.0M   1% /run/lock
tmpfs           7.8G  8.0K  7.8G   1% /tmp
tmpfs           1.6G  1.7M  1.6G   1% /run/user/1000
/dev/sdc1        59G  1.7G   57G   3% /media/user/245B-74A8
/dev/sda2 1.8T 767G 958G 45% /media/user/32ec11e8-082c-4ca5-b751-dc2852f9d5e2
user@debian:~$
...

* * *
* * *

I believe that the overlay filesystem provides the root directory for linux.

Files under GNOME shows under Other Locations > Computer a root directory:
...
user@debian:/$ ls -aAl
total 0
lrwxrwxrwx   1 root root    7 Dec 17  2022 bin -> usr/bin
drwxr-xr-x   2 root root  144 Dec 17  2022 boot
drwxr-xr-x  18 root root 3580 Mar 20 17:58 dev
drwxr-xr-x   1 root root  640 Mar 20 14:32 etc
drwxr-xr-x   1 root root   60 Mar 20 08:14 home
lrwxrwxrwx 1 root root 31 Dec 17 2022 initrd.img -> boot/initrd.img-5.10.0-20-amd64 lrwxrwxrwx 1 root root 31 Dec 17 2022 initrd.img.old -> boot/initrd.img-5.10.0-20-amd64
lrwxrwxrwx   1 root root    7 Dec 17  2022 lib -> usr/lib
lrwxrwxrwx   1 root root    9 Dec 17  2022 lib32 -> usr/lib32
lrwxrwxrwx   1 root root    9 Dec 17  2022 lib64 -> usr/lib64
lrwxrwxrwx   1 root root   10 Dec 17  2022 libx32 -> usr/libx32
drwxr-xr-x   1 root root   60 Mar 20 08:17 media
drwxr-xr-x   2 root root    3 Dec 17  2022 mnt
drwxr-xr-x   2 root root    3 Dec 17  2022 opt
dr-xr-xr-x 266 root root    0 Mar 20 08:14 proc
drwx------   1 root root   60 Dec 17  2022 root
drwxr-xr-x  31 root root  800 Mar 20 08:17 run
lrwxrwxrwx   1 root root    8 Dec 17  2022 sbin -> usr/sbin
drwxr-xr-x   2 root root    3 Dec 17  2022 srv
dr-xr-xr-x  13 root root    0 Mar 20 08:14 sys
drwxrwxrwt  17 root root  400 Mar 20 18:49 tmp
drwxr-xr-x   1 root root   80 Dec 17  2022 usr
drwxr-xr-x   1 root root  140 Dec 17  2022 var
lrwxrwxrwx 1 root root 28 Dec 17 2022 vmlinuz -> boot/vmlinuz-5.10.0-20-amd64 lrwxrwxrwx 1 root root 28 Dec 17 2022 vmlinuz.old -> boot/vmlinuz-5.10.0-20-amd64
user@debian:/$
...

When I right-click on the word Computer in the title bar of the Files window, and select Properties, it shows:
...
Name      /
Type        Folder (inode/directory)
Contents 297,003 items, totaling 10.9 GB
               (some contents unreadable)

The space allocation graphic shows:
   1.7 GB used
   6.7 GB available
 Filesystem type  overlay

Open in Disks
...

* * *
* * *

I have tried using many linux commands to find out where the overlay filesystem is mapped:
...
df -h

ls -l /dev/disk/by-id

gdisk (/dev/sda)
gdisk (/dev/sdb)
gdisk (/dev/sdc)

cfdisk /dev/sda
cfdisk /dev/sda
cfdisk /dev/sdc

sfdisk -J /dev/sda
sfdisk -J /dev/sdb
sfdisk -J /dev/sdc

user@debian:/$ cd /dev
user@debian:/dev$ ls -aAl

sfdisk -T --label (dos, gpt)

blkid

lsblk

lsblk

parted -l

mount

sgdisk
...

Output from all these commands is in the attached text file:

ASP -- commands - looking for overlay filesystem device - 20240320.txt

* * *
* * *

Suggestions from GTALUG members would be greatly appreciated !!

Steve Petrie

Etobicoke (Toronto), Ontario, Canada

[email protected]
416-233-6116
ASP -- commands - looking for overlay filesystem device - 20240320.txt   20 
March 2024

==> df -h
...
user@debian:~$ df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            7.8G     0  7.8G   0% /dev
tmpfs           1.6G  1.6M  1.6G   1% /run
/dev/sdb1       3.5G  3.5G     0 100% /run/live/medium
/dev/loop0      2.9G  2.9G     0 100% /run/live/rootfs/filesystem.squashfs
tmpfs           7.8G  1.6G  6.3G  20% /run/live/overlay
overlay         7.8G  1.6G  6.3G  20% /
tmpfs           7.8G     0  7.8G   0% /dev/shm
tmpfs           5.0M  4.0K  5.0M   1% /run/lock
tmpfs           7.8G  8.0K  7.8G   1% /tmp
tmpfs           1.6G  1.7M  1.6G   1% /run/user/1000
/dev/sdc1        59G  1.7G   57G   3% /media/user/245B-74A8
/dev/sda2       1.8T  767G  958G  45% 
/media/user/32ec11e8-082c-4ca5-b751-dc2852f9d5e2
user@debian:~$ 
...

* * *
* * *

==> ls -l /dev/disk/by-id
...
user@debian:~$ ls -l /dev/disk/by-id
total 0
lrwxrwxrwx 1 root root  9 Mar 20 08:14 ata-HL-DT-ST_BD-RE_WH16NS40_K93HCDJ1451 
-> ../../sr0
lrwxrwxrwx 1 root root  9 Mar 20 17:15 
ata-WDC_WD2003FZEX-00SRLA0_WD-WMC6N0K42XZW -> ../../sda
lrwxrwxrwx 1 root root 10 Mar 20 17:15 
ata-WDC_WD2003FZEX-00SRLA0_WD-WMC6N0K42XZW-part1 -> ../../sda1
lrwxrwxrwx 1 root root 10 Mar 20 17:15 
ata-WDC_WD2003FZEX-00SRLA0_WD-WMC6N0K42XZW-part2 -> ../../sda2
lrwxrwxrwx 1 root root 10 Mar 20 17:15 
ata-WDC_WD2003FZEX-00SRLA0_WD-WMC6N0K42XZW-part3 -> ../../sda3
lrwxrwxrwx 1 root root 13 Mar 20 15:13 nvme-eui.0025385381b04eae -> 
../../nvme0n1
lrwxrwxrwx 1 root root 13 Mar 20 15:13 
nvme-Samsung_SSD_960_EVO_250GB_S3ESNX0K311636N -> ../../nvme0n1
lrwxrwxrwx 1 root root  9 Mar 20 17:26 usb-SMI_USB_DISK-0:0 -> ../../sdb
lrwxrwxrwx 1 root root 10 Mar 20 17:26 usb-SMI_USB_DISK-0:0-part1 -> ../../sdb1
lrwxrwxrwx 1 root root 10 Mar 20 17:26 usb-SMI_USB_DISK-0:0-part2 -> ../../sdb2
lrwxrwxrwx 1 root root  9 Mar 20 17:15 wwn-0x50014ee0af21010f -> ../../sda
lrwxrwxrwx 1 root root 10 Mar 20 17:15 wwn-0x50014ee0af21010f-part1 -> 
../../sda1
lrwxrwxrwx 1 root root 10 Mar 20 17:15 wwn-0x50014ee0af21010f-part2 -> 
../../sda2
lrwxrwxrwx 1 root root 10 Mar 20 17:15 wwn-0x50014ee0af21010f-part3 -> 
../../sda3
user@debian:~$ 
...

* * *
* * *

==> gdisk (/dev/sda)
...
user@debian:~$ sudo gdisk
GPT fdisk (gdisk) version 1.0.6

Type device filename, or press <Enter> to exit: /dev/sda
Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.

Command (? for help): p
Disk /dev/sda: 3907029168 sectors, 1.8 TiB
Model: WDC WD2003FZEX-0
Sector size (logical/physical): 512/4096 bytes
Disk identifier (GUID): DF4920AE-9226-4515-8E76-57E49A49F8B3
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 3907029134
Partitions will be aligned on 2048-sector boundaries
Total free space is 2157 sectors (1.1 MiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048         1050623   512.0 MiB   EF00  
   2         1050624      3873746943   1.8 TiB     8300  
   3      3873746944      3907028991   15.9 GiB    8200  

Command (? for help): i
Partition number (1-3): 1
Partition GUID code: C12A7328-F81F-11D2-BA4B-00A0C93EC93B (EFI system partition)
Partition unique GUID: 5EE8CDB8-29F4-4087-874C-68FFEC52DE09
First sector: 2048 (at 1024.0 KiB)
Last sector: 1050623 (at 513.0 MiB)
Partition size: 1048576 sectors (512.0 MiB)
Attribute flags: 0000000000000000
Partition name: ''

Command (? for help): i
Partition number (1-3): 2
Partition GUID code: 0FC63DAF-8483-4772-8E79-3D69D8477DE4 (Linux filesystem)
Partition unique GUID: F8B3A9FC-F6CD-433F-8B90-EDD230888441
First sector: 1050624 (at 513.0 MiB)
Last sector: 3873746943 (at 1.8 TiB)
Partition size: 3872696320 sectors (1.8 TiB)
Attribute flags: 0000000000000000
Partition name: ''

Command (? for help): i
Partition number (1-3): 3
Partition GUID code: 0657FD6D-A4AB-43C4-84E5-0933C84B4F4F (Linux swap)
Partition unique GUID: B02F6A2C-CF62-4134-999E-6C9D68009ADA
First sector: 3873746944 (at 1.8 TiB)
Last sector: 3907028991 (at 1.8 TiB)
Partition size: 33282048 sectors (15.9 GiB)
Attribute flags: 0000000000000000
Partition name: ''

Command (? for help): q
user@debian:~$ 
...

==> gdisk (/dev/sdb)
...
user@debian:~$ sudo gdisk
GPT fdisk (gdisk) version 1.0.6

Type device filename, or press <Enter> to exit: /dev/sdb
Partition table scan:
  MBR: MBR only
  BSD: not present
  APM: not present
  GPT: present

Found valid MBR and GPT. Which do you want to use?
 1 - MBR
 2 - GPT
 3 - Create blank GPT

Your answer: 1

Command (? for help): p
Disk /dev/sdb: 122880000 sectors, 58.6 GiB
Model: USB DISK        
Sector size (logical/physical): 512/512 bytes
Disk identifier (GUID): EDF5FB7F-67C3-4777-9E49-DB8AA9D6A5F6
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 122879966
Partitions will be aligned on 8-sector boundaries
Total free space is 122869859 sectors (58.6 GiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   2            1656           11729   4.9 MiB     EF00  EFI system partition

Command (? for help): i
Using 2
Partition GUID code: C12A7328-F81F-11D2-BA4B-00A0C93EC93B (EFI system partition)
Partition unique GUID: A154D80B-701F-424B-86FF-29AC65D2764A
First sector: 1656 (at 828.0 KiB)
Last sector: 11729 (at 5.7 MiB)
Partition size: 10074 sectors (4.9 MiB)
Attribute flags: 0000000000000000
Partition name: 'EFI system partition'

Command (? for help): 
...
user@debian:~$ sudo gdisk
GPT fdisk (gdisk) version 1.0.6

Type device filename, or press <Enter> to exit: /dev/sdb
Partition table scan:
  MBR: MBR only
  BSD: not present
  APM: not present
  GPT: present

Found valid MBR and GPT. Which do you want to use?
 1 - MBR
 2 - GPT
 3 - Create blank GPT

Your answer: 2
Using GPT and creating fresh protective MBR.
Warning! Main partition table overlaps the first partition by 64 blocks!
You will need to delete this partition or resize it in another utility.

Command (? for help): p
Disk /dev/sdb: 122880000 sectors, 58.6 GiB
Model: USB DISK        
Sector size (logical/physical): 512/512 bytes
Disk identifier (GUID): 823222FA-8E5B-448F-97DD-CBCA609E3A67
Partition table holds up to 248 entries
Main partition table begins at sector 2 and ends at sector 63
First usable sector is 64, last usable sector is 7187776
Partitions will be aligned on 8-sector boundaries
Total free space is 1 sectors (512 bytes)

Number  Start (sector)    End (sector)  Size       Code  Name
   2            1656           11727   4.9 MiB     0700  ISOHybrid1

Command (? for help): i
Partition number (1-2): 1

Command (? for help): i
Partition number (1-2): 2
Partition GUID code: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 (Microsoft basic data)
Partition unique GUID: 823222FA-8E5B-448F-97DF-CBCA609E3A67
First sector: 1656 (at 828.0 KiB)
Last sector: 11727 (at 5.7 MiB)
Partition size: 10072 sectors (4.9 MiB)
Attribute flags: 1000000000000001
Partition name: 'ISOHybrid1'

Command (? for help): q
user@debian:~$ 
...

==> gdisk (/dev/sdc)
...
user@debian:~$ sudo gdisk
GPT fdisk (gdisk) version 1.0.6

Type device filename, or press <Enter> to exit: /dev/sdc
Warning: Partition table header claims that the size of partition table
entries is 0 bytes, but this program  supports only 128-byte entries.
Adjusting accordingly, but partition table may be garbage.
Warning: Partition table header claims that the size of partition table
entries is 0 bytes, but this program  supports only 128-byte entries.
Adjusting accordingly, but partition table may be garbage.
Partition table scan:
  MBR: MBR only
  BSD: not present
  APM: not present
  GPT: not present


***************************************************************
Found invalid GPT and valid MBR; converting MBR to GPT format
in memory. THIS OPERATION IS POTENTIALLY DESTRUCTIVE! Exit by
typing 'q' if you don't want to convert your MBR partitions
to GPT format!
***************************************************************


Command (? for help): q
user@debian:~$ 
...

* * *
* * *

==> cfdisk /dev/sda
...
                                                                              
Disk: /dev/sda
                                                          Size: 1.82 TiB, 
2000398934016 bytes, 3907029168 sectors
                                                       Label: gpt, identifier: 
DF4920AE-9226-4515-8E76-57E49A49F8B3

    Device                                            Start                     
    End                     Sectors                   Size Type
>>  /dev/sda1                                          2048                     
>> 1050623                     1048576                   512M EFI System        
>>               
    /dev/sda2                                       1050624                  
3873746943                  3872696320                   1.8T Linux filesystem
    /dev/sda3                                    3873746944                  
3907028991                    33282048                  15.9G Linux swap






 
┌───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
 │ Partition UUID: 5EE8CDB8-29F4-4087-874C-68FFEC52DE09                       
                                                                                
           │
 │ Partition type: EFI System (C12A7328-F81F-11D2-BA4B-00A0C93EC93B)          
                                                                                
           │
 │Filesystem UUID: 20CD-484A                                                  
                                                                                
           │
 │     Filesystem: vfat                                                       
                                                                                
           │
 
└───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
                                            [ Delete ]  [ Resize ]  [  Quit  ]  
[  Type  ]  [  Help  ]  [  Write ]  [  Dump  ]
...
label: gpt
label-id: DF4920AE-9226-4515-8E76-57E49A49F8B3
device: /dev/sda
unit: sectors
first-lba: 34
last-lba: 3907029134
sector-size: 512

/dev/sda1 : start=        2048, size=     1048576, 
type=C12A7328-F81F-11D2-BA4B-00A0C93EC93B, 
uuid=5EE8CDB8-29F4-4087-874C-68FFEC52DE09
/dev/sda2 : start=     1050624, size=  3872696320, 
type=0FC63DAF-8483-4772-8E79-3D69D8477DE4, 
uuid=F8B3A9FC-F6CD-433F-8B90-EDD230888441
/dev/sda3 : start=  3873746944, size=    33282048, 
type=0657FD6D-A4AB-43C4-84E5-0933C84B4F4F, 
uuid=B02F6A2C-CF62-4134-999E-6C9D68009ADA
...

==> cfdisk /dev/sdb
...
                                                                              
Disk: /dev/sdb
                                                           Size: 58.59 GiB, 
62914560000 bytes, 122880000 sectors
                                                                    Label: dos, 
identifier: 0x2268297a

    Device                 Boot                           Start                 
  End               Sectors              Size             Id Type
>>  /dev/sdb1              *                                  0               
>> 7187839               7187840              3.4G              0 Empty         
>>                 
    /dev/sdb2                                              1656                 
11729                 10074              4.9M             ef EFI (FAT-12/16/32)
    Free space                                          7188480             
122879999             115691520             55.2G




 
┌───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
 │  Partition type: Empty (0)                                                 
                                                                                
           │
 │      Attributes: 80                                                        
                                                                                
           │
 │ Filesystem UUID: 2022-12-17-13-09-30-00                                    
                                                                                
           │
 │Filesystem LABEL: d-live nf 11.6.0 gn amd64                                 
                                                                                
           │
 │      Filesystem: iso9660                                                   
                                                                                
           │
 │      Mountpoint: /run/live/medium (mounted)                                
                                                                                
           │
 
└───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
                                      [Bootable]  [ Delete ]  [ Resize ]  [  
Quit  ]  [  Type  ]  [  Help  ]  [  Write ]  [  Dump  ]


                                                                   Quit program 
without writing changes

...
label: dos
label-id: 0x2268297a
device: /dev/sdb
unit: sectors
sector-size: 512

/dev/sdb1 : start=           0, size=     7187840, type=0, bootable
/dev/sdb2 : start=        1656, size=       10074, type=ef
...
                                                                  
==> cfdisk /dev/sdc
...
                                                                              
Disk: /dev/sdc
                                                           Size: 58.59 GiB, 
62914560000 bytes, 122880000 sectors
                                                                    Label: dos, 
identifier: 0x0e02c707

    Device                  Boot                           Start                
    End               Sectors              Size             Id Type
>>  /dev/sdc1                                               2048              
>> 122877951             122875904             58.6G              7 
>> HPFS/NTFS/exFAT             








 
┌───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
 │ Partition type: HPFS/NTFS/exFAT (7)                                        
                                                                                
           │
 │Filesystem UUID: 245B-74A8                                                  
                                                                                
           │
 │     Filesystem: vfat                                                       
                                                                                
           │
 │     Mountpoint: /media/user/245B-74A8 (mounted)                            
                                                                                
           │
 
└───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
                                      [Bootable]  [ Delete ]  [ Resize ]  [  
Quit  ]  [  Type  ]  [  Help  ]  [  Write ]  [  Dump  ]


                                                                   Quit program 
without writing changes
...
label: dos
label-id: 0x0e02c707
device: /dev/sdc
unit: sectors
sector-size: 512

/dev/sdc1 : start=        2048, size=   122875904, type=7
...

* * *
* * *

==> sfdisk -J <dev>
...
user@debian:~$ sudo sfdisk -J /dev/sda
{
   "partitiontable": {
      "label":"gpt",
      "id":"DF4920AE-9226-4515-8E76-57E49A49F8B3",
      "device":"/dev/sda",
      "unit":"sectors",
      "firstlba":34,
      "lastlba":3907029134,
      "sectorsize":512,
      "partitions": [
         {"node":"/dev/sda1", "start":2048, "size":1048576, 
"type":"C12A7328-F81F-11D2-BA4B-00A0C93EC93B", 
"uuid":"5EE8CDB8-29F4-4087-874C-68FFEC52DE09"},
         {"node":"/dev/sda2", "start":1050624, "size":3872696320, 
"type":"0FC63DAF-8483-4772-8E79-3D69D8477DE4", 
"uuid":"F8B3A9FC-F6CD-433F-8B90-EDD230888441"},
         {"node":"/dev/sda3", "start":3873746944, "size":33282048, 
"type":"0657FD6D-A4AB-43C4-84E5-0933C84B4F4F", 
"uuid":"B02F6A2C-CF62-4134-999E-6C9D68009ADA"}
      ]
   }
}
...
user@debian:~$ sudo sfdisk -J /dev/sdb
{
   "partitiontable": {
      "label":"dos",
      "id":"0x2268297a",
      "device":"/dev/sdb",
      "unit":"sectors",
      "sectorsize":512,
      "partitions": [
         {"node":"/dev/sdb1", "start":0, "size":7187840, "type":"0", 
"bootable":true},
         {"node":"/dev/sdb2", "start":1656, "size":10074, "type":"ef"}
      ]
   }
}
...
user@debian:~$ sudo sfdisk -J /dev/sdc
{
   "partitiontable": {
      "label":"dos",
      "id":"0x0e02c707",
      "device":"/dev/sdc",
      "unit":"sectors",
      "sectorsize":512,
      "partitions": [
         {"node":"/dev/sdc1", "start":2048, "size":122875904, "type":"7"}
      ]
   }
}
user@debian:~$ 
...

==> cfdisk /dev/sdc
...
                                                                              
Disk: /dev/sdc
                                                           Size: 58.59 GiB, 
62914560000 bytes, 122880000 sectors
                                                                    Label: dos, 
identifier: 0x0e02c707

    Device                  Boot                           Start                
    End               Sectors              Size             Id Type
>>  /dev/sdc1                                               2048              
>> 122877951             122875904             58.6G              7 
>> HPFS/NTFS/exFAT             








 
┌───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
 │ Partition type: HPFS/NTFS/exFAT (7)                                        
                                                                                
           │
 │Filesystem UUID: 245B-74A8                                                  
                                                                                
           │
 │     Filesystem: vfat                                                       
                                                                                
           │
 │     Mountpoint: /media/user/245B-74A8 (mounted)                            
                                                                                
           │
 
└───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
                                      [Bootable]  [ Delete ]  [ Resize ]  [  
Quit  ]  [  Type  ]  [  Help  ]  [  Write ]  [  Dump  ]


                                                                   Quit program 
without writing changes
...
label: dos
label-id: 0x0e02c707
device: /dev/sdc
unit: sectors
sector-size: 512

/dev/sdc1 : start=        2048, size=   122875904, type=7
...

* * *
* * *

==> sfdisk -g
...
user@debian:~$ sudo sfdisk -g
/dev/nvme0n1: 238475 cylinders, 64 heads, 32 sectors/track
/dev/sda: 243201 cylinders, 255 heads, 63 sectors/track
sfdisk: cannot open /dev/sr0: No medium found
user@debian:~$ 
...


==> https://vitux.com/display-drives-on-linux/

sudo fdisk -l
...
user@debian:~$ sudo fdisk -l
Disk /dev/nvme0n1: 232.89 GiB, 250059350016 bytes, 488397168 sectors
Disk model: Samsung SSD 960 EVO 250GB               
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sda: 1.82 TiB, 2000398934016 bytes, 3907029168 sectors
Disk model: WDC WD2003FZEX-0
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: DF4920AE-9226-4515-8E76-57E49A49F8B3

Device          Start        End    Sectors  Size Type
/dev/sda1        2048    1050623    1048576  512M EFI System
/dev/sda2     1050624 3873746943 3872696320  1.8T Linux filesystem
/dev/sda3  3873746944 3907028991   33282048 15.9G Linux swap


Disk /dev/sdb: 58.59 GiB, 62914560000 bytes, 122880000 sectors
Disk model: USB DISK        
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x2268297a

Device     Boot Start     End Sectors  Size Id Type
/dev/sdb1  *        0 7187839 7187840  3.4G  0 Empty
/dev/sdb2        1656   11729   10074  4.9M ef EFI (FAT-12/16/32)


Disk /dev/sdc: 58.59 GiB, 62914560000 bytes, 122880000 sectors
Disk model: USB DISK        
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x0e02c707

Device     Boot Start       End   Sectors  Size Id Type
/dev/sdc1        2048 122877951 122875904 58.6G  7 HPFS/NTFS/exFAT


Disk /dev/loop0: 2.82 GiB, 3033255936 bytes, 5924328 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
user@debian:~$ 
...

==> sudo blkid
...
user@debian:~$ sudo blkid
/dev/sdb1: BLOCK_SIZE="2048" UUID="2022-12-17-13-09-30-00" LABEL="d-live nf 
11.6.0 gn amd64" TYPE="iso9660" PTUUID="2268297a" PTTYPE="dos" 
PARTUUID="2268297a-01"
/dev/loop0: TYPE="squashfs"
/dev/sda1: UUID="20CD-484A" BLOCK_SIZE="512" TYPE="vfat" 
PARTUUID="5ee8cdb8-29f4-4087-874c-68ffec52de09"
/dev/sda2: UUID="32ec11e8-082c-4ca5-b751-dc2852f9d5e2" BLOCK_SIZE="4096" 
TYPE="ext4" PARTUUID="f8b3a9fc-f6cd-433f-8b90-edd230888441"
/dev/sda3: UUID="a54c0db8-a253-423e-abcb-0f93f0c26c78" TYPE="swap" 
PARTUUID="b02f6a2c-cf62-4134-999e-6c9d68009ada"
/dev/sdb2: SEC_TYPE="msdos" UUID="DEB0-0001" BLOCK_SIZE="512" TYPE="vfat" 
PARTUUID="2268297a-02"
/dev/sdc1: UUID="245B-74A8" BLOCK_SIZE="512" TYPE="vfat" PARTUUID="0e02c707-01"
user@debian:~$ 
...

==> lsblk
...
user@debian:/$ sudo lsblk -o  
NAME,KNAME,MAJ:MIN,FSTYPE,SIZE,MOUNTPOINT,LABEL,UUID,STATE,TYPE
NAME    KNAME   MAJ:MIN FSTYPE     SIZE MOUNTPOINT                              
         LABEL                     UUID                                 STATE   
TYPE
loop0   loop0     7:0   squashfs   2.8G 
/usr/lib/live/mount/rootfs/filesystem.squashfs                                  
                                        loop
sda     sda       8:0              1.8T                                         
                                                                        running 
disk
├─sda1  sda1      8:1   vfat       512M                                     
                                       20CD-484A                                
    part
├─sda2  sda2      8:2   ext4       1.8T 
/media/user/32ec11e8-082c-4ca5-b751-dc2852f9d5e2                           
32ec11e8-082c-4ca5-b751-dc2852f9d5e2         part
└─sda3  sda3      8:3   swap      15.9G                                     
                                       a54c0db8-a253-423e-abcb-0f93f0c26c78     
    part
sdb     sdb       8:16  iso9660   58.6G                                         
         d-live nf 11.6.0 gn amd64 2022-12-17-13-09-30-00               running 
disk
├─sdb1  sdb1      8:17  iso9660    3.4G /usr/lib/live/mount/medium          
             d-live nf 11.6.0 gn amd64 2022-12-17-13-09-30-00                   
    part
└─sdb2  sdb2      8:18  vfat       4.9M                                     
                                       DEB0-0001                                
    part
sdc     sdc       8:32            58.6G                                         
                                                                        running 
disk
└─sdc1  sdc1      8:33  vfat      58.6G /media/user/245B-74A8               
                                       245B-74A8                                
    part
sr0     sr0      11:0             1024M                                         
                                                                        running 
rom
nvme0n1 nvme0n1 259:0            232.9G                                         
                                                                        live    
disk
user@debian:/$ 
...

==> sudo parted -l
...
user@debian:~$ sudo parted -l
Model: ATA WDC WD2003FZEX-0 (scsi)
Disk /dev/sda: 2000GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system     Name  Flags
 1      1049kB  538MB   537MB   fat32                 boot, esp
 2      538MB   1983GB  1983GB  ext4
 3      1983GB  2000GB  17.0GB  linux-swap(v1)        swap


Model: SMI USB DISK (scsi)
Disk /dev/sdb: 62.9GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start  End     Size    Type     File system  Flags
 2      848kB  6006kB  5158kB  primary               esp


Model: SMI USB DISK (scsi)
Disk /dev/sdc: 62.9GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type     File system  Flags
 1      1049kB  62.9GB  62.9GB  primary  fat32


Error: /dev/nvme0n1: unrecognised disk label
Model: Samsung SSD 960 EVO 250GB (nvme)                                   
Disk /dev/nvme0n1: 250GB
Sector size (logical/physical): 512B/512B
Partition Table: unknown
Disk Flags: 

user@debian:~$ 
...

* * *
* * *

==> mount
...
user@debian:/$ mount
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs 
(rw,nosuid,relatime,size=8084160k,nr_inodes=2021040,mode=755)
devpts on /dev/pts type devpts 
(rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs 
(rw,nosuid,nodev,noexec,relatime,size=1625824k,mode=755)
/dev/sdb1 on /run/live/medium type iso9660 
(ro,noatime,nojoliet,check=s,map=n,blocksize=2048,iocharset=utf8)
/dev/loop0 on /run/live/rootfs/filesystem.squashfs type squashfs (ro,noatime)
tmpfs on /run/live/overlay type tmpfs (rw,noatime,size=8129120k,mode=755)
overlay on / type overlay 
(rw,noatime,lowerdir=/run/live/rootfs/filesystem.squashfs/,upperdir=/run/live/overlay/rw,workdir=/run/live/overlay/work)
tmpfs on /usr/lib/live/mount type tmpfs 
(rw,nosuid,nodev,noexec,relatime,size=1625824k,mode=755)
/dev/sdb1 on /usr/lib/live/mount/medium type iso9660 
(ro,noatime,nojoliet,check=s,map=n,blocksize=2048,iocharset=utf8)
/dev/loop0 on /usr/lib/live/mount/rootfs/filesystem.squashfs type squashfs 
(ro,noatime)
tmpfs on /usr/lib/live/mount/overlay type tmpfs 
(rw,noatime,size=8129120k,mode=755)
securityfs on /sys/kernel/security type securityfs 
(rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
cgroup2 on /sys/fs/cgroup type cgroup2 
(rw,nosuid,nodev,noexec,relatime,nsdelegate,memory_recursiveprot)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
efivarfs on /sys/firmware/efi/efivars type efivarfs 
(rw,nosuid,nodev,noexec,relatime)
none on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs 
(rw,relatime,fd=29,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=11180)
tracefs on /sys/kernel/tracing type tracefs (rw,nosuid,nodev,noexec,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M)
mqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)
configfs on /sys/kernel/config type configfs (rw,nosuid,nodev,noexec,relatime)
fusectl on /sys/fs/fuse/connections type fusectl 
(rw,nosuid,nodev,noexec,relatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev,relatime)
tmpfs on /run/user/1000 type tmpfs 
(rw,nosuid,nodev,relatime,size=1625820k,nr_inodes=406455,mode=700,uid=1000,gid=1000)
gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse 
(rw,nosuid,nodev,relatime,user_id=1000,group_id=1000)
/dev/sdc1 on /media/user/245B-74A8 type vfat 
(rw,nosuid,nodev,relatime,uid=1000,gid=1000,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,showexec,utf8,flush,errors=remount-ro,uhelper=udisks2)
/dev/sda2 on /media/user/32ec11e8-082c-4ca5-b751-dc2852f9d5e2 type ext4 
(rw,nosuid,nodev,relatime,errors=remount-ro,uhelper=udisks2)
user@debian:/$ 
...

* * *
* * *
...
user@debian:/$ cd /dev
user@debian:/dev$ ls -aAl
total 0
crw-r--r--  1 root root     10, 235 Mar 20 08:14 autofs
drwxr-xr-x  2 root root         420 Mar 20 08:14 block
drwxr-xr-x  2 root root         120 Mar 20 08:14 bsg
crw-------  1 root root     10, 234 Mar 20 08:14 btrfs-control
drwxr-xr-x  3 root root          60 Mar 20 08:14 bus
lrwxrwxrwx  1 root root           3 Mar 20 08:14 cdrom -> sr0
lrwxrwxrwx  1 root root           3 Mar 20 08:14 cdrw -> sr0
drwxr-xr-x  2 root root        3340 Mar 20 17:34 char
crw-------  1 root root      5,   1 Mar 20 08:14 console
lrwxrwxrwx  1 root root          11 Mar 20 08:14 core -> /proc/kcore
drwxr-xr-x  6 root root         120 Mar 20 14:31 cpu
crw-------  1 root root     10,  62 Mar 20 08:14 cpu_dma_latency
crw-------  1 root root     10, 203 Mar 20 08:14 cuse
drwxr-xr-x  7 root root         140 Mar 20 08:14 disk
drwxr-xr-x  3 root root         100 Mar 20 08:14 dri
lrwxrwxrwx  1 root root           3 Mar 20 08:14 dvd -> sr0
lrwxrwxrwx  1 root root           3 Mar 20 08:14 dvdrw -> sr0
crw-rw----  1 root video    29,   0 Mar 20 08:14 fb0
lrwxrwxrwx  1 root root          13 Mar 20 08:14 fd -> /proc/self/fd
crw-rw-rw-  1 root root      1,   7 Mar 20 08:14 full
crw-rw-rw-  1 root root     10, 229 Mar 20 08:14 fuse
crw-------  1 root root    245,   0 Mar 20 17:34 hidraw0
crw-------  1 root root     10, 228 Mar 20 08:14 hpet
drwxr-xr-x  2 root root           0 Mar 20 08:14 hugepages
lrwxrwxrwx  1 root root          12 Mar 20 08:14 initctl -> /run/initctl
drwxr-xr-x  4 root root         440 Mar 20 17:34 input
crw-r--r--  1 root root      1,  11 Mar 20 08:14 kmsg
lrwxrwxrwx  1 root root          28 Mar 20 08:14 log -> 
/run/systemd/journal/dev-log
brw-rw----  1 root disk      7,   0 Mar 20 08:14 loop0
brw-rw----  1 root disk      7,   1 Mar 20 08:14 loop1
brw-rw----  1 root disk      7,   2 Mar 20 08:14 loop2
brw-rw----  1 root disk      7,   3 Mar 20 08:14 loop3
brw-rw----  1 root disk      7,   4 Mar 20 08:14 loop4
brw-rw----  1 root disk      7,   5 Mar 20 08:14 loop5
brw-rw----  1 root disk      7,   6 Mar 20 08:14 loop6
brw-rw----  1 root disk      7,   7 Mar 20 08:14 loop7
crw-rw----  1 root disk     10, 237 Mar 20 08:14 loop-control
drwxr-xr-x  2 root root          60 Mar 20 08:14 mapper
crw-------  1 root root    244,   0 Mar 20 08:14 mei0
crw-r-----  1 root kmem      1,   1 Mar 20 08:14 mem
drwxrwxrwt  2 root root          40 Mar 20 08:14 mqueue
drwxr-xr-x  2 root root          60 Mar 20 08:14 net
crw-rw-rw-  1 root root      1,   3 Mar 20 08:14 null
crw-------  1 root root    246,   0 Mar 20 08:14 nvme0
brw-rw----  1 root disk    259,   0 Mar 20 15:13 nvme0n1
crw-------  1 root root     10, 144 Mar 20 08:14 nvram
crw-r-----  1 root kmem      1,   4 Mar 20 08:14 port
crw-------  1 root root    108,   0 Mar 20 08:14 ppp
crw-------  1 root root     10,   1 Mar 20 08:14 psaux
crw-rw-rw-  1 root tty       5,   2 Mar 20 17:52 ptmx
crw-------  1 root root    249,   0 Mar 20 08:14 ptp0
drwxr-xr-x  2 root root           0 Mar 20 08:14 pts
crw-rw-rw-  1 root root      1,   8 Mar 20 08:14 random
crw-rw-r--+ 1 root netdev   10, 242 Mar 20 08:14 rfkill
lrwxrwxrwx  1 root root           4 Mar 20 08:14 rtc -> rtc0
crw-------  1 root root    252,   0 Mar 20 08:14 rtc0
brw-rw----  1 root disk      8,   0 Mar 20 17:15 sda
brw-rw----  1 root disk      8,   1 Mar 20 17:15 sda1
brw-rw----  1 root disk      8,   2 Mar 20 17:15 sda2
brw-rw----  1 root disk      8,   3 Mar 20 17:15 sda3
brw-rw----  1 root disk      8,  16 Mar 20 17:26 sdb
brw-rw----  1 root disk      8,  17 Mar 20 17:26 sdb1
brw-rw----  1 root disk      8,  18 Mar 20 17:26 sdb2
brw-rw----  1 root disk      8,  32 Mar 20 17:22 sdc
brw-rw----  1 root disk      8,  33 Mar 20 17:22 sdc1
crw-rw----  1 root disk     21,   0 Mar 20 08:14 sg0
crw-rw----+ 1 root cdrom    21,   1 Mar 20 08:14 sg1
crw-rw----  1 root disk     21,   2 Mar 20 08:14 sg2
crw-rw----  1 root disk     21,   3 Mar 20 08:14 sg3
drwxrwxrwt  2 root root          40 Mar 20 08:14 shm
crw-------  1 root root     10, 231 Mar 20 08:14 snapshot
drwxr-xr-x  3 root root         280 Mar 20 08:14 snd
brw-rw----+ 1 root cdrom    11,   0 Mar 20 08:14 sr0
lrwxrwxrwx  1 root root          15 Mar 20 08:14 stderr -> /proc/self/fd/2
lrwxrwxrwx  1 root root          15 Mar 20 08:14 stdin -> /proc/self/fd/0
lrwxrwxrwx  1 root root          15 Mar 20 08:14 stdout -> /proc/self/fd/1
crw-rw-rw-  1 root tty       5,   0 Mar 20 08:14 tty
crw--w----  1 root tty       4,   0 Mar 20 08:14 tty0
crw--w----  1 root tty       4,   1 Mar 20 08:14 tty1
crw--w----  1 root tty       4,  10 Mar 20 08:14 tty10
crw--w----  1 root tty       4,  11 Mar 20 08:14 tty11
crw--w----  1 root tty       4,  12 Mar 20 08:14 tty12
crw--w----  1 root tty       4,  13 Mar 20 08:14 tty13
crw--w----  1 root tty       4,  14 Mar 20 08:14 tty14
crw--w----  1 root tty       4,  15 Mar 20 08:14 tty15
crw--w----  1 root tty       4,  16 Mar 20 08:14 tty16
crw--w----  1 root tty       4,  17 Mar 20 08:14 tty17
crw--w----  1 root tty       4,  18 Mar 20 08:14 tty18
crw--w----  1 root tty       4,  19 Mar 20 08:14 tty19
crw--w----  1 user tty       4,   2 Mar 20 08:16 tty2
crw--w----  1 root tty       4,  20 Mar 20 08:14 tty20
crw--w----  1 root tty       4,  21 Mar 20 08:14 tty21
crw--w----  1 root tty       4,  22 Mar 20 08:14 tty22
crw--w----  1 root tty       4,  23 Mar 20 08:14 tty23
crw--w----  1 root tty       4,  24 Mar 20 08:14 tty24
crw--w----  1 root tty       4,  25 Mar 20 08:14 tty25
crw--w----  1 root tty       4,  26 Mar 20 08:14 tty26
crw--w----  1 root tty       4,  27 Mar 20 08:14 tty27
crw--w----  1 root tty       4,  28 Mar 20 08:14 tty28
crw--w----  1 root tty       4,  29 Mar 20 08:14 tty29
crw--w----  1 root tty       4,   3 Mar 20 08:14 tty3
crw--w----  1 root tty       4,  30 Mar 20 08:14 tty30
crw--w----  1 root tty       4,  31 Mar 20 08:14 tty31
crw--w----  1 root tty       4,  32 Mar 20 08:14 tty32
crw--w----  1 root tty       4,  33 Mar 20 08:14 tty33
crw--w----  1 root tty       4,  34 Mar 20 08:14 tty34
crw--w----  1 root tty       4,  35 Mar 20 08:14 tty35
crw--w----  1 root tty       4,  36 Mar 20 08:14 tty36
crw--w----  1 root tty       4,  37 Mar 20 08:14 tty37
crw--w----  1 root tty       4,  38 Mar 20 08:14 tty38
crw--w----  1 root tty       4,  39 Mar 20 08:14 tty39
crw--w----  1 root tty       4,   4 Mar 20 08:14 tty4
crw--w----  1 root tty       4,  40 Mar 20 08:14 tty40
crw--w----  1 root tty       4,  41 Mar 20 08:14 tty41
crw--w----  1 root tty       4,  42 Mar 20 08:14 tty42
crw--w----  1 root tty       4,  43 Mar 20 08:14 tty43
crw--w----  1 root tty       4,  44 Mar 20 08:14 tty44
crw--w----  1 root tty       4,  45 Mar 20 08:14 tty45
crw--w----  1 root tty       4,  46 Mar 20 08:14 tty46
crw--w----  1 root tty       4,  47 Mar 20 08:14 tty47
crw--w----  1 root tty       4,  48 Mar 20 08:14 tty48
crw--w----  1 root tty       4,  49 Mar 20 08:14 tty49
crw--w----  1 root tty       4,   5 Mar 20 08:14 tty5
crw--w----  1 root tty       4,  50 Mar 20 08:14 tty50
crw--w----  1 root tty       4,  51 Mar 20 08:14 tty51
crw--w----  1 root tty       4,  52 Mar 20 08:14 tty52
crw--w----  1 root tty       4,  53 Mar 20 08:14 tty53
crw--w----  1 root tty       4,  54 Mar 20 08:14 tty54
crw--w----  1 root tty       4,  55 Mar 20 08:14 tty55
crw--w----  1 root tty       4,  56 Mar 20 08:14 tty56
crw--w----  1 root tty       4,  57 Mar 20 08:14 tty57
crw--w----  1 root tty       4,  58 Mar 20 08:14 tty58
crw--w----  1 root tty       4,  59 Mar 20 08:14 tty59
crw--w----  1 root tty       4,   6 Mar 20 08:14 tty6
crw--w----  1 root tty       4,  60 Mar 20 08:14 tty60
crw--w----  1 root tty       4,  61 Mar 20 08:14 tty61
crw--w----  1 root tty       4,  62 Mar 20 08:14 tty62
crw--w----  1 root tty       4,  63 Mar 20 08:14 tty63
crw--w----  1 root tty       4,   7 Mar 20 08:14 tty7
crw--w----  1 root tty       4,   8 Mar 20 08:14 tty8
crw--w----  1 root tty       4,   9 Mar 20 08:14 tty9
crw-rw----  1 root dialout   4,  64 Mar 20 08:14 ttyS0
crw-rw----  1 root dialout   4,  65 Mar 20 08:14 ttyS1
crw-rw----  1 root dialout   4,  66 Mar 20 08:14 ttyS2
crw-rw----  1 root dialout   4,  67 Mar 20 08:14 ttyS3
crw-------  1 root root     10, 239 Mar 20 08:14 uhid
crw-------  1 root root     10, 223 Mar 20 08:14 uinput
crw-rw-rw-  1 root root      1,   9 Mar 20 08:14 urandom
crw-rw----  1 root tty       7,   0 Mar 20 08:14 vcs
crw-rw----  1 root tty       7,   1 Mar 20 08:14 vcs1
crw-rw----  1 root tty       7,   2 Mar 20 08:14 vcs2
crw-rw----  1 root tty       7,   3 Mar 20 08:14 vcs3
crw-rw----  1 root tty       7,   4 Mar 20 08:14 vcs4
crw-rw----  1 root tty       7,   5 Mar 20 08:14 vcs5
crw-rw----  1 root tty       7,   6 Mar 20 08:14 vcs6
crw-rw----  1 root tty       7, 128 Mar 20 08:14 vcsa
crw-rw----  1 root tty       7, 129 Mar 20 08:14 vcsa1
crw-rw----  1 root tty       7, 130 Mar 20 08:14 vcsa2
crw-rw----  1 root tty       7, 131 Mar 20 08:14 vcsa3
crw-rw----  1 root tty       7, 132 Mar 20 08:14 vcsa4
crw-rw----  1 root tty       7, 133 Mar 20 08:14 vcsa5
crw-rw----  1 root tty       7, 134 Mar 20 08:14 vcsa6
crw-rw----  1 root tty       7,  64 Mar 20 08:14 vcsu
crw-rw----  1 root tty       7,  65 Mar 20 08:14 vcsu1
crw-rw----  1 root tty       7,  66 Mar 20 08:14 vcsu2
crw-rw----  1 root tty       7,  67 Mar 20 08:14 vcsu3
crw-rw----  1 root tty       7,  68 Mar 20 08:14 vcsu4
crw-rw----  1 root tty       7,  69 Mar 20 08:14 vcsu5
crw-rw----  1 root tty       7,  70 Mar 20 08:14 vcsu6
drwxr-xr-x  2 root root          60 Mar 20 08:14 vfio
crw-------  1 root root     10,  63 Mar 20 08:14 vga_arbiter
crw-------  1 root root     10, 137 Mar 20 08:14 vhci
crw-------  1 root root     10, 238 Mar 20 08:14 vhost-net
crw-------  1 root root     10, 241 Mar 20 08:14 vhost-vsock
crw-------  1 root root     10, 130 Mar 20 08:14 watchdog
crw-------  1 root root    243,   0 Mar 20 08:14 watchdog0
crw-rw-rw-  1 root root      1,   5 Mar 20 08:14 zero
user@debian:/dev$ 
...

* * *
* * *

==> sfdisk -T --label dos, gpt
...
user@debian:~$ sudo sfdisk -T --label gpt
Id  Name

C12A7328-F81F-11D2-BA4B-00A0C93EC93B  EFI System
024DEE41-33E7-11D3-9D69-0008C781F39F  MBR partition scheme
D3BFE2DE-3DAF-11DF-BA40-E3A556D89593  Intel Fast Flash
21686148-6449-6E6F-744E-656564454649  BIOS boot
F4019732-066E-4E12-8273-346C5641494F  Sony boot partition
BFBFAFE7-A34F-448A-9A5B-6213EB736C22  Lenovo boot partition
9E1A2D38-C612-4316-AA26-8B49521E5A8B  PowerPC PReP boot
7412F7D5-A156-4B13-81DC-867174929325  ONIE boot
D4E6E2CD-4469-46F3-B5CB-1BFF57AFC149  ONIE config
E3C9E316-0B5C-4DB8-817D-F92DF00215AE  Microsoft reserved
EBD0A0A2-B9E5-4433-87C0-68B6B72699C7  Microsoft basic data
5808C8AA-7E8F-42E0-85D2-E1E90434CFB3  Microsoft LDM metadata
AF9B60A0-1431-4F62-BC68-3311714A69AD  Microsoft LDM data
DE94BBA4-06D1-4D40-A16A-BFD50179D6AC  Windows recovery environment
37AFFC90-EF7D-4E96-91C3-2D7AE055B174  IBM General Parallel Fs
E75CAF8F-F680-4CEE-AFA3-B001E56EFC2D  Microsoft Storage Spaces
75894C1E-3AEB-11D3-B7C1-7B03A0000000  HP-UX data
E2A1E728-32E3-11D6-A682-7B03A0000000  HP-UX service
0657FD6D-A4AB-43C4-84E5-0933C84B4F4F  Linux swap
0FC63DAF-8483-4772-8E79-3D69D8477DE4  Linux filesystem
3B8F8425-20E0-4F3B-907F-1A25A76F98E8  Linux server data
44479540-F297-41B2-9AF7-D131D5F0458A  Linux root (x86)
4F68BCE3-E8CD-4DB1-96E7-FBCAF984B709  Linux root (x86-64)
69DAD710-2CE4-4E3C-B16C-21A1D49ABED3  Linux root (ARM)
B921B045-1DF0-41C3-AF44-4C6F280D3FAE  Linux root (ARM-64)
993D8D3D-F80E-4225-855A-9DAF8ED7EA97  Linux root (IA-64)
8DA63339-0007-60C0-C436-083AC8230908  Linux reserved
933AC7E1-2EB4-4F13-B844-0E14E2AEF915  Linux home
A19D880F-05FC-4D3B-A006-743F0F84911E  Linux RAID
E6D6D379-F507-44C2-A23C-238F2A3DF928  Linux LVM
4D21B016-B534-45C2-A9FB-5C16E091FD2D  Linux variable data
7EC6F557-3BC5-4ACA-B293-16EF5DF639D1  Linux temporary data
75250D76-8CC6-458E-BD66-BD47CC81A812  Linux /usr (x86)
8484680C-9521-48C6-9C11-B0720656F69E  Linux /usr (x86-64)
7D0359A3-02B3-4F0A-865C-654403E70625  Linux /usr (ARM)
B0E01050-EE5F-4390-949A-9101B17104E9  Linux /usr (ARM-64)
4301D2A6-4E3B-4B2A-BB94-9E0B2C4225EA  Linux /usr (IA-64)
D13C5D3B-B5D1-422A-B29F-9454FDC89D76  Linux root verity (x86)
2C7357ED-EBD2-46D9-AEC1-23D437EC2BF5  Linux root verity (x86-64)
7386CDF2-203C-47A9-A498-F2ECCE45A2D6  Linux root verity (ARM)
DF3300CE-D69F-4C92-978C-9BFB0F38D820  Linux root verity (ARM-64)
86ED10D5-B607-45BB-8957-D350F23D0571  Linux root verity (IA-64)
8F461B0D-14EE-4E81-9AA9-049B6FB97ABD  Linux /usr verity (x86)
77FF5F63-E7B6-4633-ACF4-1565B864C0E6  Linux /usr verity (x86-64)
C215D751-7BCD-4649-BE90-6627490A4C05  Linux /usr verity (ARM)
6E11A4E7-FBCA-4DED-B9E9-E1A512BB664E  Linux /usr verity (ARM-64)
6A491E03-3BE7-4545-8E38-83320E0EA880  Linux /usr verity (IA-64)
BC13C2FF-59E6-4262-A352-B275FD6F7172  Linux extended boot
773f91ef-66d4-49b5-bd83-d683bf40ad16  Linux user's home
516E7CB4-6ECF-11D6-8FF8-00022D09712B  FreeBSD data
83BD6B9D-7F41-11DC-BE0B-001560B84F0F  FreeBSD boot
516E7CB5-6ECF-11D6-8FF8-00022D09712B  FreeBSD swap
516E7CB6-6ECF-11D6-8FF8-00022D09712B  FreeBSD UFS
516E7CBA-6ECF-11D6-8FF8-00022D09712B  FreeBSD ZFS
516E7CB8-6ECF-11D6-8FF8-00022D09712B  FreeBSD Vinum
48465300-0000-11AA-AA11-00306543ECAC  Apple HFS/HFS+
7C3457EF-0000-11AA-AA11-00306543ECAC  Apple APFS
55465300-0000-11AA-AA11-00306543ECAC  Apple UFS
52414944-0000-11AA-AA11-00306543ECAC  Apple RAID
52414944-5F4F-11AA-AA11-00306543ECAC  Apple RAID offline
426F6F74-0000-11AA-AA11-00306543ECAC  Apple boot
4C616265-6C00-11AA-AA11-00306543ECAC  Apple label
5265636F-7665-11AA-AA11-00306543ECAC  Apple TV recovery
53746F72-6167-11AA-AA11-00306543ECAC  Apple Core storage
6A82CB45-1DD2-11B2-99A6-080020736631  Solaris boot
6A85CF4D-1DD2-11B2-99A6-080020736631  Solaris root
6A898CC3-1DD2-11B2-99A6-080020736631  Solaris /usr & Apple ZFS
6A87C46F-1DD2-11B2-99A6-080020736631  Solaris swap
6A8B642B-1DD2-11B2-99A6-080020736631  Solaris backup
6A8EF2E9-1DD2-11B2-99A6-080020736631  Solaris /var
6A90BA39-1DD2-11B2-99A6-080020736631  Solaris /home
6A9283A5-1DD2-11B2-99A6-080020736631  Solaris alternate sector
6A945A3B-1DD2-11B2-99A6-080020736631  Solaris reserved 1
6A9630D1-1DD2-11B2-99A6-080020736631  Solaris reserved 2
6A980767-1DD2-11B2-99A6-080020736631  Solaris reserved 3
6A96237F-1DD2-11B2-99A6-080020736631  Solaris reserved 4
6A8D2AC7-1DD2-11B2-99A6-080020736631  Solaris reserved 5
49F48D32-B10E-11DC-B99B-0019D1879648  NetBSD swap
49F48D5A-B10E-11DC-B99B-0019D1879648  NetBSD FFS
49F48D82-B10E-11DC-B99B-0019D1879648  NetBSD LFS
2DB519C4-B10E-11DC-B99B-0019D1879648  NetBSD concatenated
2DB519EC-B10E-11DC-B99B-0019D1879648  NetBSD encrypted
49F48DAA-B10E-11DC-B99B-0019D1879648  NetBSD RAID
FE3A2A5D-4F32-41A7-B725-ACCC3285A309  ChromeOS kernel
3CB8E202-3B7E-47DD-8A3C-7FF2A13CFCEC  ChromeOS root fs
2E0A753D-9E48-43B0-8337-B15192CB1B5E  ChromeOS reserved
85D5E45A-237C-11E1-B4B3-E89A8F7FC3A7  MidnightBSD data
85D5E45E-237C-11E1-B4B3-E89A8F7FC3A7  MidnightBSD boot
85D5E45B-237C-11E1-B4B3-E89A8F7FC3A7  MidnightBSD swap
0394EF8B-237E-11E1-B4B3-E89A8F7FC3A7  MidnightBSD UFS
85D5E45D-237C-11E1-B4B3-E89A8F7FC3A7  MidnightBSD ZFS
85D5E45C-237C-11E1-B4B3-E89A8F7FC3A7  MidnightBSD Vinum
45B0969E-9B03-4F30-B4C6-B4B80CEFF106  Ceph Journal
45B0969E-9B03-4F30-B4C6-5EC00CEFF106  Ceph Encrypted Journal
4FBD7E29-9D25-41B8-AFD0-062C0CEFF05D  Ceph OSD
4FBD7E29-9D25-41B8-AFD0-5EC00CEFF05D  Ceph crypt OSD
89C57F98-2FE5-4DC0-89C1-F3AD0CEFF2BE  Ceph disk in creation
89C57F98-2FE5-4DC0-89C1-5EC00CEFF2BE  Ceph crypt disk in creation
AA31E02A-400F-11DB-9590-000C2911D1B8  VMware VMFS
9D275380-40AD-11DB-BF97-000C2911D1B8  VMware Diagnostic
381CFCCC-7288-11E0-92EE-000C2911D0B2  VMware Virtual SAN
77719A0C-A4A0-11E3-A47E-000C29745A24  VMware Virsto
9198EFFC-31C0-11DB-8F78-000C2911D1B8  VMware Reserved
824CC7A0-36A8-11E3-890A-952519AD3F61  OpenBSD data
CEF5A9AD-73BC-4601-89F3-CDEEEEE321A1  QNX6 file system
C91818F9-8025-47AF-89D2-F030D7000C2C  Plan 9 partition
5B193300-FC78-40CD-8002-E86C45580B47  HiFive Unleashed FSBL
2E54B353-1271-4842-806F-E436D6AF6985  HiFive Unleashed BBL
...
user@debian:~$ sudo sfdisk -T --label dos
Id  Name

 0  Empty
 1  FAT12
 2  XENIX root
 3  XENIX usr
 4  FAT16 <32M
 5  Extended
 6  FAT16
 7  HPFS/NTFS/exFAT
 8  AIX
 9  AIX bootable
 a  OS/2 Boot Manager
 b  W95 FAT32
 c  W95 FAT32 (LBA)
 e  W95 FAT16 (LBA)
 f  W95 Ext'd (LBA)
10  OPUS
11  Hidden FAT12
12  Compaq diagnostics
14  Hidden FAT16 <32M
16  Hidden FAT16
17  Hidden HPFS/NTFS
18  AST SmartSleep
1b  Hidden W95 FAT32
1c  Hidden W95 FAT32 (LBA)
1e  Hidden W95 FAT16 (LBA)
24  NEC DOS
27  Hidden NTFS WinRE
39  Plan 9
3c  PartitionMagic recovery
40  Venix 80286
41  PPC PReP Boot
42  SFS
4d  QNX4.x
4e  QNX4.x 2nd part
4f  QNX4.x 3rd part
50  OnTrack DM
51  OnTrack DM6 Aux1
52  CP/M
53  OnTrack DM6 Aux3
54  OnTrackDM6
55  EZ-Drive
56  Golden Bow
5c  Priam Edisk
61  SpeedStor
63  GNU HURD or SysV
64  Novell Netware 286
65  Novell Netware 386
70  DiskSecure Multi-Boot
75  PC/IX
80  Old Minix
81  Minix / old Linux
82  Linux swap / Solaris
83  Linux
84  OS/2 hidden or Intel hibernation
85  Linux extended
86  NTFS volume set
87  NTFS volume set
88  Linux plaintext
8e  Linux LVM
93  Amoeba
94  Amoeba BBT
9f  BSD/OS
a0  IBM Thinkpad hibernation
a5  FreeBSD
a6  OpenBSD
a7  NeXTSTEP
a8  Darwin UFS
a9  NetBSD
ab  Darwin boot
af  HFS / HFS+
b7  BSDI fs
b8  BSDI swap
bb  Boot Wizard hidden
bc  Acronis FAT32 LBA
be  Solaris boot
bf  Solaris
c1  DRDOS/sec (FAT-12)
c4  DRDOS/sec (FAT-16 < 32M)
c6  DRDOS/sec (FAT-16)
c7  Syrinx
da  Non-FS data
db  CP/M / CTOS / ...
de  Dell Utility
df  BootIt
e1  DOS access
e3  DOS R/O
e4  SpeedStor
ea  Linux extended boot
eb  BeOS fs
ee  GPT
ef  EFI (FAT-12/16/32)
f0  Linux/PA-RISC boot
f1  SpeedStor
f4  SpeedStor
f2  DOS secondary
fb  VMware VMFS
fc  VMware VMKCORE
fd  Linux raid autodetect
fe  LANstep
ff  BBT
user@debian:~$ sudo sfdisk -T --label gpt
...

* * *
* * *

==> sgdisk
...
user@debian:~$ sudo sgdisk -L
0700 Microsoft basic data                0c01 Microsoft reserved                
2700 Windows RE                          3000 ONIE boot                         
3001 ONIE config                         3900 Plan 9                            
4100 PowerPC PReP boot                   4200 Windows LDM data                  
4201 Windows LDM metadata                4202 Windows Storage Spaces            
7501 IBM GPFS                            7f00 ChromeOS kernel                   
7f01 ChromeOS root                       7f02 ChromeOS reserved                 
8200 Linux swap                          8300 Linux filesystem                  
8301 Linux reserved                      8302 Linux /home                       
8303 Linux x86 root (/)                  8304 Linux x86-64 root (/)             
8305 Linux ARM64 root (/)                8306 Linux /srv                        
8307 Linux ARM32 root (/)                8308 Linux dm-crypt                    
8309 Linux LUKS                          830a Linux IA-64 root (/)              
830b Linux x86 root verity               830c Linux x86-64 root verity          
830d Linux ARM32 root verity             830e Linux ARM64 root verity           
830f Linux IA-64 root verity             8310 Linux /var                        
8311 Linux /var/tmp                      8312 Linux user's home                 
8313 Linux x86 /usr                      8314 Linux x86-64 /usr                 
8315 Linux ARM32 /usr                    8316 Linux ARM64 /usr                  
8317 Linux IA-64 /usr                    8318 Linux x86 /usr verity             
8319 Linux x86-64 /usr verity            831a Linux ARM32 /usr verity           
831b Linux ARM64 /usr verity             831c Linux IA-64 /usr verity           
8400 Intel Rapid Start                   8500 Container Linux /usr              
8501 Container Linux resizable rootfs    8502 Container Linux /OEM customization
8503 Container Linux root on RAID        8e00 Linux LVM                         
a000 Android bootloader                  a001 Android bootloader 2              
a002 Android boot 1                      a003 Android recovery 1                
a004 Android misc                        a005 Android metadata                  
a006 Android system 1                    a007 Android cache                     
a008 Android data                        a009 Android persistent                
a00a Android factory                     a00b Android fastboot/tertiary         
a00c Android OEM                         a00d Android vendor                    
a00e Android config                      a00f Android factory (alt)             
a010 Android meta                        a011 Android EXT                       
a012 Android SBL1                        a013 Android SBL2                      
a014 Android SBL3                        a015 Android APPSBL                    
a016 Android QSEE/tz                     a017 Android QHEE/hyp                  
a018 Android RPM                         a019 Android WDOG debug/sdi            
a01a Android DDR                         a01b Android CDT                       
a01c Android RAM dump                    a01d Android SEC                       
a01e Android PMIC                        a01f Android misc 1                    
a020 Android misc 2                      a021 Android device info               
a022 Android APDP                        a023 Android MSADP                     
a024 Android DPO                         a025 Android recovery 2                
a026 Android persist                     a027 Android modem ST1                 
a028 Android modem ST2                   a029 Android FSC                       
a02a Android FSG 1                       a02b Android FSG 2                     
a02c Android SSD                         a02d Android keystore                  
a02e Android encrypt                     a02f Android EKSST                     
a030 Android RCT                         a031 Android spare1                    
a032 Android spare2                      a033 Android spare3                    
a034 Android spare4                      a035 Android raw resources             
a036 Android boot 2                      a037 Android FOTA                      
a038 Android system 2                    a039 Android cache                     
a03a Android user data                   a03b LG (Android) advanced flasher     
a03c Android PG1FS                       a03d Android PG2FS                     
a03e Android board info                  a03f Android MFG                       
a040 Android limits                      a200 Atari TOS basic data              
a500 FreeBSD disklabel                   a501 FreeBSD boot                      
a502 FreeBSD swap                        a503 FreeBSD UFS                       
a504 FreeBSD ZFS                         a505 FreeBSD Vinum/RAID                
a580 Midnight BSD data                   a581 Midnight BSD boot                 
a582 Midnight BSD swap                   a583 Midnight BSD UFS                  
a584 Midnight BSD ZFS                    a585 Midnight BSD Vinum                
a600 OpenBSD disklabel                   a800 Apple UFS                         
a901 NetBSD swap                         a902 NetBSD FFS                        
a903 NetBSD LFS                          a904 NetBSD concatenated               
a905 NetBSD encrypted                    a906 NetBSD RAID                       
ab00 Recovery HD                         af00 Apple HFS/HFS+                    
af01 Apple RAID                          af02 Apple RAID offline                
af03 Apple label                         af04 AppleTV recovery                  
af05 Apple Core Storage                  af06 Apple SoftRAID Status             
af07 Apple SoftRAID Scratch              af08 Apple SoftRAID Volume             
af09 Apple SoftRAID Cache                af0a Apple APFS                        
b300 QNX6 Power-Safe                     bc00 Acronis Secure Zone               
be00 Solaris boot                        bf00 Solaris root                      
bf01 Solaris /usr & Mac ZFS              bf02 Solaris swap                      
bf03 Solaris backup                      bf04 Solaris /var                      
bf05 Solaris /home                       bf06 Solaris alternate sector          
bf07 Solaris Reserved 1                  bf08 Solaris Reserved 2                
bf09 Solaris Reserved 3                  bf0a Solaris Reserved 4                
bf0b Solaris Reserved 5                  c001 HP-UX data                        
c002 HP-UX service                       e100 ONIE boot                         
e101 ONIE config                         e900 Veracrypt data                    
ea00 XBOOTLDR partition                  eb00 Haiku BFS                         
ed00 Sony system partition               ed01 Lenovo system partition           
ef00 EFI system partition                ef01 MBR partition scheme              
ef02 BIOS boot partition                 f800 Ceph OSD                          
f801 Ceph dm-crypt OSD                   f802 Ceph journal                      
f803 Ceph dm-crypt journal               f804 Ceph disk in creation             
f805 Ceph dm-crypt disk in creation      f806 Ceph block                        
f807 Ceph block DB                       f808 Ceph block write-ahead log        
f809 Ceph lockbox for dm-crypt keys      f80a Ceph multipath OSD                
f80b Ceph multipath journal              f80c Ceph multipath block 1            
f80d Ceph multipath block 2              f80e Ceph multipath block DB           
f80f Ceph multipath block write-ahead l  f810 Ceph dm-crypt block               
f811 Ceph dm-crypt block DB              f812 Ceph dm-crypt block write-ahead lo
f813 Ceph dm-crypt LUKS journal          f814 Ceph dm-crypt LUKS block          
f815 Ceph dm-crypt LUKS block DB         f816 Ceph dm-crypt LUKS block write-ahe
f817 Ceph dm-crypt LUKS OSD              fb00 VMWare VMFS                       
fb01 VMWare reserved                     fc00 VMWare kcore crash protection     
fd00 Linux RAID                          
user@debian:~$ 
...

*** End of Dlcument ***

---
Post to this mailing list [email protected]
Unsubscribe from this mailing list https://gtalug.org/mailman/listinfo/talk

Reply via email to