On 17/12/2025 11:07, Ralph Corderoy wrote:
Don't forget that booting from a different source, say a USB drive,
might re-arrange what drive is sda.
I'm fairly certain that the disc identities are ok when booting from the
DVD Drive that contains Partition Magic, because the sizes match up.
Commands which help observe what's what to find what your normal sda
drive is now called:
sudo -i blkid
terry@optiplex:~$ sudo -i blkid
/dev/sdb2: LABEL="Home" UUID="c7d489ae-2d05-4c37-a699-effb5f2262ec"
BLOCK_SIZE="4096" TYPE="ext4"
PARTUUID="6182d317-8280-4066-86e4-c078bd39a17a"
/dev/sdb3: LABEL_FATBOOT="BACKUP" LABEL="BACKUP" UUID="651E-205E"
BLOCK_SIZE="512" TYPE="vfat" PARTLABEL="FAT32_Backup_Partition"
PARTUUID="772a4742-e75c-439
7-9680-803918f14529"
/dev/sdb1: UUID="48206cfd-9f42-4e35-9ca9-aaeebf011140" TYPE="swap"
PARTUUID="c8cc13a7-d6f8-4d57-9b33-ee3de9225960"
/dev/sda1: UUID="ff55c4cb-60bd-453f-8459-408f7324ad7e" BLOCK_SIZE="4096"
TYPE="ext4" PARTUUID="30098eb5-9a77-48dc-8e6b-bd33ef8ca62e"
/dev/loop1: BLOCK_SIZE="131072" TYPE="squashfs"
..
Lots of these
sudo -i lsblk
terry@optiplex:~$ sudo -i lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
loop0 7:0 0 4K 1 loop /snap/bare/5
..
Lots of these
sda 8:0 0 58.7G 0 disk
└─sda1 8:1 0 58.7G 0 part /
sdb 8:16 0 931.5G 0 disk
├─sdb1 8:17 0 15M 0 part
├─sdb2 8:18 0 908.2G 0 part /home
└─sdb3 8:19 0 23.3G 0 part /backup
sr0 11:0 1 1024M 0 rom
sudo -i lsblk -o
rm,rota,type,name,size,fssize,fsavail,label,partlabel,vendor,model,serial,mountpoint
terry@optiplex:~$ sudo -i lsblk -o
rm,rota,type,name,size,fssize,fsavail,label,partlabel,vendor,model,serial,mountpoint
RM ROTA TYPE NAME SIZE FSSIZE FSAVAIL LABEL PARTLABEL
VENDOR MODEL SERIAL MOUNTPOINT
0 0 loop loop0 4K 128K 0
/snap/bare/5
0 0 loop loop1 79.8M 79.9M 0
/snap/cheese/78
0 0 loop loop2 175.2M 175.3M 0
/snap/chromium/3313
0 0 loop loop3 176.1M 176.3M 0
/snap/chromium/3324
0 0 loop loop4 355.4M 355.4M 0
/snap/clementine/1841
0 0 loop loop5 55.5M 55.5M 0
/snap/core18/2959
0 0 loop loop6 55.5M 55.5M 0
/snap/core18/2976
0 0 loop loop7 63.8M 63.9M 0
/snap/core20/2682
0 0 loop loop8 63.8M 63.9M 0
/snap/core20/2686
0 0 loop loop9 73.9M 74M 0
/snap/core22/2139
0 0 loop loop10 74M 74M 0
/snap/core22/2163
0 0 loop loop11 66.8M 66.9M 0
/snap/core24/1225
0 0 loop loop12 66.8M 66.9M 0
/snap/core24/1237
0 0 loop loop13 48.8M 48.9M 0
/snap/cups/1130
0 0 loop loop14 47.6M 47.6M 0
/snap/cups/1134
0 0 loop loop15 62.2M 62.3M 0
/snap/ffmpeg-2204/126
0 0 loop loop16 250.6M 250.6M 0
/snap/firefox/7423
0 0 loop loop17 250.4M 250.5M 0
/snap/firefox/7477
0 0 loop loop18 11.1M 11.3M 0
/snap/firmware-updater/167
0 0 loop loop19 516M 516.1M 0
/snap/gnome-42-2204/202
0 0 loop loop20 18.5M 18.5M 0
/snap/firmware-updater/210
0 0 loop loop21 516.2M 516.3M 0
/snap/gnome-42-2204/226
0 0 loop loop22 618.3M 618.4M 0
/snap/gnome-46-2404/125
0 0 loop loop23 669.8M 669.9M 0
/snap/gnome-46-2404/145
0 0 loop loop24 91.7M 91.8M 0
/snap/gtk-common-themes/1535
0 0 loop loop25 10.1M 10.1M 0
/snap/htop/5181
0 0 loop loop26 10.3M 10.4M 0
/snap/htop/5382
0 0 loop loop27 1.5G 1.5G 0
/snap/kf5-core22/3
0 0 loop loop28 371.5M 371.5M 0
/snap/krita/109
0 0 loop loop29 395M 395M 0
/snap/mesa-2404/1165
0 0 loop loop30 159.3M 159.4M 0
/snap/py-sol-fc/198
0 0 loop loop31 290.8M 290.9M 0
/snap/mesa-2404/912
0 0 loop loop32 233.6M 233.6M 0
/snap/rpi-imager/709
0 0 loop loop33 50.9M 51M 0
/snap/snapd/25577
0 0 loop loop34 48.1M 48.1M 0
/snap/snapd/25935
0 0 loop loop35 99.8M 99.9M 0
/snap/snowflake/2
0 0 loop loop36 226.3M 226.4M 0
/snap/thunderbird/915
0 0 disk sda 58.7G
ATA SanDisk
SDSSDP064G 152424400510
0 0 part └─sda1 58.7G 57.5G 30.9G
/
0 0 disk sdb 931.5G
ATA SanDisk SSD PLUS
1000GB 19360S465503
0 0 part ├─sdb1 15M
0 0 part ├─sdb2 908.2G 892.9G 614.3G Home
/home
0 0 part └─sdb3 23.3G 23.3G 16.1G BACKUP FAT32_Backup_Partition
/backup
1 0 rom sr0 1024M
HL-DT-ST HL-DT-ST DVDRAM
GT90N M5HD3EJ4615
Well, assuming you've ext4 filesystems, then
sudo -i e2fsck -n /dev/sdc1
I presume that has to be done with the disc unmounted, eg in Partition
Magic?
--
Terry Coles
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