partitions missing on my external hard drive

[arno renevier <arno@renevier.net>]

Hi,
I have a hard drive which does not work any more. It's a scsi hard drive over
usb. I don't remember the numbers of partitions it had, but at least one which
was crypted with cryptsetup.

Currently, the drive looks correctly recognized by the system, and it appears
correctly in /dev/sdb.

But it seems like no partition at all is recognized. Nothing appears in
/dev/sdb*, and fdisk -l outputs nothing.

Do you have any idea on what could possibly be wrong, and how I could debug
this problem more ?

Regards,
arno



dmesg output when connecting the drive:

[334008.507212] usb 1-2: USB disconnect, address 4
[334297.396189] usb 1-2: new high speed USB device using ehci_hcd and address 5
[334297.532165] usb 1-2: New USB device found, idVendor=04fc, idProduct=0c25
[334297.532183] usb 1-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[334297.532196] usb 1-2: Product: USB to Serial-ATA bridge
[334297.532206] usb 1-2: Manufacturer: Sunplus Technology Co.,Ltd.
[334297.532217] usb 1-2: SerialNumber: 000000000000000000000000000005
[334297.532516] usb 1-2: configuration #1 chosen from 1 choice
[334297.534530] scsi5 : SCSI emulation for USB Mass Storage devices
[334297.535075] usb-storage: device found at 5
[334297.535082] usb-storage: waiting for device to settle before scanning
[334302.532535] usb-storage: device scan complete
[334302.533378] scsi 5:0:0:0: Direct-Access     Sunplus  USB2SATA bridge  0407 PQ: 0 ANSI: 2
[334302.538188] sd 5:0:0:0: [sdb] Attached SCSI removable disk

fdisk -l output:

$ fdisk -l /dev/sdb
$

(nothing was output)


part of lshw output related to this disk

     *-scsi:1
          physical id: 2
          bus info: usb@1:2
          logical name: scsi5
          capabilities: emulated scsi-host
          configuration: driver=usb-storage
        *-disk
             description: SCSI Disk
             physical id: 0.0.0
             bus info: scsi@5:0.0.0
             logical name: /dev/sdb