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I have a Seagate ST320014A 20Gig hard drive connected via usb using a JMicron hard drive adaptor cable. I cannot mount, partition or format the disk. Please assist.

Here is my dmesg output:

[85971.757708] usb 1-1.6: Product: USB to ATA/ATAPI Bridge
[85971.757712] usb 1-1.6: Manufacturer: JMicron
[85971.757716] usb 1-1.6: SerialNumber: 540F31162222
[85971.759098] scsi13 : usb-storage 1-1.6:1.0
[85972.756999] scsi 13:0:0:0: Direct-Access     ST320014 A                     PQ: 0 ANSI: 2 CCS
[85972.758478] sd 13:0:0:0: Attached scsi generic sg3 type 0
[85972.760361] sd 13:0:0:0: [sdc] 39102336 512-byte logical blocks: (20.0 GB/18.6 GiB)
[85972.761893] sd 13:0:0:0: [sdc] Write Protect is off
[85972.761905] sd 13:0:0:0: [sdc] Mode Sense: 00 38 00 00
[85972.762606] sd 13:0:0:0: [sdc] Asking for cache data failed
[85972.762614] sd 13:0:0:0: [sdc] Assuming drive cache: write through
[85972.765476] sd 13:0:0:0: [sdc] Asking for cache data failed
[85972.765482] sd 13:0:0:0: [sdc] Assuming drive cache: write through

When I run sudo fdisk /dev/sdc, I get the following message:

fdisk: unable to read /dev/sdc: Input/output error

I also have to following entries in my dmesg output:

[86078.412947] sd 13:0:0:0: [sdc] Unhandled sense code
[86078.412954] sd 13:0:0:0: [sdc]  
[86078.412958] Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE
[86078.412962] sd 13:0:0:0: [sdc]  
[86078.412964] Sense Key : Hardware Error [current] 
[86078.412970] sd 13:0:0:0: [sdc]  
[86078.412974] Add. Sense: No additional sense information
[86078.412978] sd 13:0:0:0: [sdc] CDB: 
[86078.412980] Read(10): 28 00 00 00 00 00 00 00 08 00
[86078.412994] end_request: I/O error, dev sdc, sector 0

When installed in the original PC the hard drive shipped with, it works just fine.

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