USB Memory stick (more info)

[Robin Laing]

M.Lewis wrote:
> 
> M.Lewis wrote:
> 
>>
>> A few days ago I copied some files to a USB Memory stick. No problem. 
>> Now I'm needing to copy some more files to the same memory stick and 
>> it's telling me it's a read-only file system. I had zero problems with 
>> this the other day.
>>
>> mount is as follows:
>> /dev/sda1 on /media/USB-DISK type vfat 
>> (rw,noexec,nosuid,nodev,noatime,uid=500,utf8,shortname=lower)
>>
>> It should be writeable.
>>
>> Thanks for any pointers.
>> Mike
>>
> 
> A quick look at the logs shows apparently problems with the drive. Do I 
> need to reformat it or what? It still has the default WinBlows setup on it.
> 
> Sep 26 23:00:03 moe kernel:   Vendor: SanDisk   Model: Cruzer Titanium 
>  Rev: 2000
> Sep 26 23:00:03 moe kernel:   Type:   Direct-Access  ANSI SCSI revision: 00
> Sep 26 23:00:03 moe kernel: SCSI device sdb: 1014784 512-byte hdwr 
> sectors (520 MB)
> Sep 26 23:00:03 moe kernel: sdb: Write Protect is off
> Sep 26 23:00:03 moe kernel: sdb: assuming drive cache: write through
> Sep 26 23:00:03 moe kernel: SCSI device sdb: 1014784 512-byte hdwr 
> sectors (520 MB)
> Sep 26 23:00:03 moe kernel: sdb: Write Protect is off
> Sep 26 23:00:03 moe kernel: sdb: assuming drive cache: write through
> Sep 26 23:00:03 moe kernel:  sdb: sdb1
> Sep 26 23:00:03 moe kernel: sd 8:0:0:0: Attached scsi removable disk sdb
> Sep 26 23:00:03 moe kernel: sd 8:0:0:0: Attached scsi generic sg0 type 0
> Sep 26 23:00:08 moe kernel: FAT: Filesystem panic (dev sdb1)
> Sep 26 23:00:08 moe kernel:     fat_get_cluster: invalid cluster chain 
> (i_pos 120595)
> Sep 26 23:00:08 moe kernel:     File system has been set read-only
> Sep 26 23:00:08 moe kernel: FAT: Filesystem panic (dev sdb1)
> Sep 26 23:00:08 moe kernel:     fat_get_cluster: invalid cluster chain 
> (i_pos 120595)
> Sep 26 23:00:08 moe kernel: FAT: Filesystem panic (dev sdb1)
> Sep 26 23:00:08 moe kernel:     fat_get_cluster: invalid cluster chain 
> (i_pos 120595)
> Sep 26 23:00:08 moe kernel: FAT: Filesystem panic (dev sdb1)
> Sep 26 23:00:08 moe kernel:     fat_get_cluster: invalid cluster chain 
> (i_pos 120595)
> Sep 26 23:00:08 moe kernel: FAT: Filesystem panic (dev sdb1)
> Sep 26 23:00:08 moe kernel:     fat_get_cluster: invalid cluster chain 
> (i_pos 120595)
> Sep 26 23:00:08 moe kernel: FAT: Filesystem panic (dev sdb1)
> 
> 


Just a thought.

How big were the files you were copying.  There is an issue open for 
problems in syncing the drive and the icon disappearing before the drive 
is safe to unmount.  I toasted a file system when transferring ~300M.

Once by accident and twice to recreate the problem to prove it.

-- 
Robin Laing