[mythtv-users] [OT] Dead hard drive - no partition table.

Nick Rout nick.rout at gmail.com
Sat Jun 1 06:45:00 UTC 2013


I have a 2TB hard drive that seems to have died. Really it is "only TV (and
movies)" but if I can get the data back I'd be a lot happier, and so would
la famille.

I have removed it from the backend and attached it to my laptop with a
USB/Sata Bridge (JMicron Technology Corp. / JMicron USA Technology Corp.
JM20337 Hi-Speed USB to SATA & PATA Combo Bridge according lsusb).

dmesg tells me:

nick at envy ~ $ dmesg|grep sdb
[    6.405906] sd 6:0:0:0: [sdb] Very big device. Trying to use READ
CAPACITY(16).
[    6.406940] sd 6:0:0:0: [sdb] Using 0xffffffff as device size
[    6.406945] sd 6:0:0:0: [sdb] 4294967296 512-byte logical blocks: (2.19
TB/2.00 TiB)
[    6.407860] sd 6:0:0:0: [sdb] Write Protect is off
[    6.407863] sd 6:0:0:0: [sdb] Mode Sense: 00 38 00 00
[    6.408674] sd 6:0:0:0: [sdb] Asking for cache data failed
[    6.408677] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[    6.409594] sd 6:0:0:0: [sdb] Very big device. Trying to use READ
CAPACITY(16).
[    6.410606] sd 6:0:0:0: [sdb] Using 0xffffffff as device size
[    6.412354] sd 6:0:0:0: [sdb] Asking for cache data failed
[    6.412356] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[    6.434782]  sdb: unknown partition table
[    6.435920] sd 6:0:0:0: [sdb] Very big device. Trying to use READ
CAPACITY(16).
[    6.436950] sd 6:0:0:0: [sdb] Using 0xffffffff as device size
[    6.438676] sd 6:0:0:0: [sdb] Asking for cache data failed
[    6.438679] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[    6.438681] sd 6:0:0:0: [sdb] Attached SCSI disk

gparted and other partition tools claim it has no partition table. I had it
divided into two 1.0T partitions and after a lot of screwing about with
gpart trying to work out where the partition boundaries were I thought I'd
just try and guess and see what I could recover. gparted however seems to
refuse to make a partition table at all.

Is it toast? Can anyone figure out any more steps to try and get the data?
gpart gives no feedback at all, even after running 24hours.
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