On Fri, May 28, 2010 at 06:37:59PM -0400, john wrote:
> On 28/05/10 14:26, d.sastre.medina@gmail.com wrote:
> > On Fri, May 28, 2010 at 10:42:22AM -0400, john wrote:
> >> I can no longer read or write or even unmounted a USB flash drive.
> >>
> >> Something happened during the last two weeks. I am using squeeze and
> >> regularly upgrade on a daily basis. The only change to the system I can
> >> recall was debfoster run during that period where I deleted some 4 or
> >> five libraries.
> >>
> -------------snip
> >
> > Please provide more info, i.e. what does mount says when the USB stick
> > is plugged in? fdisk -l output would be helpful too. The ouput of tail
> > -f /var/log/messages when plugging in the USB stick can be informative
> > too.
>
> here is the aditional information.:
>
> john@debian:~/Desktop$ umount /media/usb0
> umount: /media/usb0 is not in the fstab (and you are not root)
> john@debian:~/Desktop$ fdisk -l
> bash: fdisk: command not found
This is normal. Only root can issue this commands.
> john@debian:~/Desktop$ su
> Password:
> root@debian:/home/john/Desktop# umount /media/usb0
> root@debian:/home/john/Desktop# fdisk -l
>
>
> Disk /dev/sda: 2079 MB, 2079850496 bytes
> 64 heads, 62 sectors/track, 1023 cylinders
> Units = cylinders of 3968 * 512 = 2031616 bytes
> Disk identifier: 0x6f20736b
>
> This doesn't look like a partition table
> Probably you selected the wrong device.
>
> Device Boot Start End Blocks Id System
> /dev/sda1 ? 196103 483782 570754815+ 72 Unknown
> Partition 1 has different physical/logical beginnings (non-Linux?):
> phys=(357, 116, 40) logical=(196102, 51, 11)
> Partition 1 has different physical/logical endings:
> phys=(357, 32, 45) logical=(483781, 40, 51)
> Partition 1 does not end on cylinder boundary.
> /dev/sda2 ? 42513 530423 968014120 65 Novell Netware 386
> Partition 2 has different physical/logical beginnings (non-Linux?):
> phys=(288, 115, 43) logical=(42512, 30, 47)
> Partition 2 has different physical/logical endings:
> phys=(367, 114, 50) logical=(530422, 52, 42)
> Partition 2 does not end on cylinder boundary.
> /dev/sda3 ? 471241 959151 968014096 79 Unknown
> Partition 3 has different physical/logical beginnings (non-Linux?):
> phys=(366, 32, 33) logical=(471240, 18, 30)
> Partition 3 has different physical/logical endings:
> phys=(357, 32, 43) logical=(959150, 39, 39)
> Partition 3 does not end on cylinder boundary.
> /dev/sda4 ? 727239 727253 27749+ d Unknown
> Partition 4 has different physical/logical beginnings (non-Linux?):
> phys=(372, 97, 50) logical=(727238, 12, 25)
> Partition 4 has different physical/logical endings:
> phys=(0, 10, 0) logical=(727252, 11, 33)
> Partition 4 does not end on cylinder boundary.
>
> Partition table entries are not in disk order
This is weird. Is the USB stick partitioned? Looks like it is:
/dev/sda{1..4}. Could you try sfdisk -l /dev/sda as root?
> root@debian:/var/log# tail -f messages
> May 28 18:26:29 debian kernel: [21978.475036] usb 1-6: SerialNumber:
> 35A3FB06093932140607
> May 28 18:26:30 debian kernel: [21978.477058] usb 1-6: configuration #1
> chosen from 1 choice
> May 28 18:26:30 debian kernel: [21978.481514] scsi3 : SCSI emulation for
> USB Mass Storage devices
> May 28 18:26:35 debian kernel: [21983.481527] scsi 3:0:0:0:
> Direct-Access LEXAR JD FIREFLY 1100 PQ: 0 ANSI: 0 CCS
> May 28 18:26:35 debian kernel: [21983.486491] sd 3:0:0:0: [sda] 4062208
> 512-byte logical blocks: (2.07 GB/1.93 GiB)
> May 28 18:26:35 debian kernel: [21983.487225] sd 3:0:0:0: [sda] Write
> Protect is off
> May 28 18:26:35 debian kernel: [21983.496254] sda:
> May 28 18:26:35 debian kernel: [21983.562404] sd 3:0:0:0: [sda] Attached
> SCSI removable disk
> May 28 18:26:35 debian usbmount[10512]: executing command: mount -tvfat
> -osync,noexec,nodev,noatime,nodiratime /dev/sda /media/usb0
> May 28 18:26:35 debian usbmount[10512]: executing command: run-parts
> /etc/usbmount/mount.d
This log entries tell you that your USB stick is identified and
assigned a mount point: /dev/sda is mounted in /media/usb0.
Everything here is pretty normal stuff.
Is there anything under /media/usb0?
If you can recover your data from there, I suggest you to back it all up and
format the stick.
Something like mkfs.vfat -v -F 32 -n FIREFLY /dev/sda should work.
man mkfs.vfat for more info.
Regards.
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