2009/9/16 Till Wimmer <g4-l...@tonarchiv.ch>:
> Umarzuki Mochlis wrote:
>>
>> umarz...@ctrl:~$ sudo mount /dev/sdb1 /mnt/
>> mount: block device /dev/sdb1 is write-protected, mounting read-only
>> umarz...@ctrl:~$ df -h
>> Filesystem            Size  Used Avail Use% Mounted on
>> /dev/sda1              11G  7.7G  2.2G  78% /
>> tmpfs                 1.9G     0  1.9G   0% /lib/init/rw
>> udev                   10M  904K  9.2M   9% /dev
>> tmpfs                 1.9G     0  1.9G   0% /dev/shm
>> /dev/sda2             123G  112G  5.3G  96% /home
>> /dev/sdb1             1.9G 1020M  892M  54% /mnt
>> umarz...@ctrl:~$ df -hi
>> Filesystem            Inodes   IUsed   IFree IUse% Mounted on
>> /dev/sda1               671K    180K    492K   27% /
>> tmpfs                   465K       4    465K    1% /lib/init/rw
>> udev                    465K    1.7K    463K    1% /dev
>> tmpfs                   465K       1    465K    1% /dev/shm
>> /dev/sda2               7.8M    123K    7.7M    2% /home
>> /dev/sdb1                  0       0       0    -  /mnt
>>
>>
>> It is /dev/sdb1. I could not find any write protection button on this
>> usb flashdrive. How can I make this one writeable again?
>>
>
> What filesystem is it?

It is using fat32 fs

Maybe there is some useful information in the kernel
> messages (dmesg).
> For example NTFS is mounted read only by default.


dmesg output

[12400.200196] usb 3-3: new high speed USB device using ehci_hcd and address 7
[12400.343300] usb 3-3: configuration #1 chosen from 1 choice
[12400.350109] scsi9 : SCSI emulation for USB Mass Storage devices
[12400.351302] usb 3-3: New USB device found, idVendor=1005, idProduct=b113
[12400.351302] usb 3-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[12400.351302] usb 3-3: Product: USB FLASH DRIVE
[12400.351302] usb 3-3: Manufacturer:
[12400.351302] usb 3-3: SerialNumber: 19861B610FD6
[12400.359302] usb-storage: device found at 7
[12400.359302] usb-storage: waiting for device to settle before scanning
[12405.361766] usb-storage: device scan complete
[12405.365754] scsi 9:0:0:0: Direct-Access              USB FLASH
DRIVE  PMAP PQ: 0 ANSI: 0 CCS
[12405.685764] sd 9:0:0:0: [sdb] 3915776 512-byte hardware sectors (2005 MB)
[12405.685764] sd 9:0:0:0: [sdb] Write Protect is on
[12405.685764] sd 9:0:0:0: [sdb] Mode Sense: 23 00 80 00
[12405.685764] sd 9:0:0:0: [sdb] Assuming drive cache: write through
[12405.692713] sd 9:0:0:0: [sdb] 3915776 512-byte hardware sectors (2005 MB)
[12405.693762] sd 9:0:0:0: [sdb] Write Protect is on
[12405.693762] sd 9:0:0:0: [sdb] Mode Sense: 23 00 80 00
[12405.693762] sd 9:0:0:0: [sdb] Assuming drive cache: write through
[12405.693762]  sdb: sdb1
[12405.693762] sd 9:0:0:0: [sdb] Attached SCSI removable disk
[12405.693762] sd 9:0:0:0: Attached scsi generic sg2 type 0
[12409.271003] FAT: utf8 is not a recommended IO charset for FAT
filesystems, filesystem will be case sensitive!

>
> Regards,
> TW
>
>
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>



-- 
Regards,

Umarzuki Mochlis
http://gameornot.net


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