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

Greg gregl at nycap.rr.com
Sat Jun 1 15:49:22 UTC 2013


On 06/01/2013 02:45 AM, Nick Rout wrote:
> 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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I have used testdisk for a similar problem.. You can pick and choose the 
files you want to save...

http://www.cgsecurity.org/wiki/TestDisk

good luck
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