Art Alexion on 14 Feb 2007 15:42:58 -0000


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[PLUG] restoring a corrupted USB iPod


This iPod shuffle died about a year ago.  There was nothing I could do to 
restore it.  Linux recognized the device but wouldn't mount it.  Windows and 
mac wouldn't even recognize it.

I left it turned on for a year  so that the charge would die in hopes of being 
able to just reinitialize it.  Windows now sees it but iTunes can't restore 
it.

I had fixed another shuffle in Linux by running fsck to determine the 
corruption.  fsck wouldn't repair it, but I could mount the iPod in Linux, 
delete the corrupted file and then iTunes could restore it.

But on this iPod, neither fdisk, cfdisk nor fsck will access the device.

The kernel correctly identifies it, but reports I/O errors.

Suggestions for accessing it to repartition and reformat?

relevant dmesg below:

[17184814.516000] hub 1-1:1.0: USB hub found
[17184814.516000] hub 1-1:1.0: 4 ports detected
[17184814.832000] usb 1-1.4: new full speed USB device using uhci_hcd
and address 3
[17184814.940000] usb 1-1.4: configuration #1 chosen from 2 choices
[17184815.764000] SCSI subsystem initialized
[17184815.868000] Initializing USB Mass Storage driver...
[17184815.872000] scsi0 : SCSI emulation for USB Mass Storage devices
[17184815.872000] usb-storage: device found at 3
[17184815.872000] usb-storage: waiting for device to settle before sca
nning
[17184815.872000] usbcore: registered new driver usb-storage
[17184815.872000] USB Mass Storage support registered.
[17184820.876000]   Vendor: Apple     Model: iPod              Rev: 2.
70
[17184820.876000]   Type:   Direct-Access                      ANSI SC
SI revision: 04
[17184820.900000] usb-storage: device scan complete
[17184821.008000] Driver 'sd' needs updating - please use bus_type met
hods
[17184821.036000] sda: Unit Not Ready, sense:
[17184821.036000] : Current: sense key: Unit Attention
[17184821.036000]     Additional sense: Medium format corrupted
[17184821.056000] sda : READ CAPACITY failed.
[17184821.056000] sda : status=1, message=00, host=0, driver=08
[17184821.056000] sd: Current: sense key: Unit Attention
[17184821.056000]     Additional sense: Medium format corrupted
[17184821.064000] sda: test WP failed, assume Write Enabled
[17184821.064000] sda: assuming drive cache: write through
[17184821.140000] sda: Unit Not Ready, sense:
[17184821.140000] : Current: sense key: Unit Attention
[17184821.140000]     Additional sense: Medium format corrupted
[17184821.164000] sda : READ CAPACITY failed.
[17184821.164000] sda : status=1, message=00, host=0, driver=08
[17184821.168000] sd: Current: sense key: Unit Attention
[17184821.168000]     Additional sense: Medium format corrupted
[17184821.172000] sda: test WP failed, assume Write Enabled
[17184821.176000] sda: assuming drive cache: write through
[17184821.192000] sda: Unit Not Ready, sense:
[17184821.196000] : Current: sense key: Unit Attention
[17184821.196000]     Additional sense: Medium format corrupted
[17184821.216000] sda : READ CAPACITY failed.
[17184821.216000] sda : status=1, message=00, host=0, driver=08
[17184821.220000] sd: Current: sense key: Unit Attention
[17184821.220000]     Additional sense: Medium format corrupted
[17184821.228000] sda: test WP failed, assume Write Enabled
[17184821.228000] sda: assuming drive cache: write through
[17184821.228000]  sda:<3>Buffer I/O error on device sda, logical bloc
k 0
[17184821.228000] Buffer I/O error on device sda, logical block 0
[17184821.228000]  unable to read partition table
[17184821.232000] sd 0:0:0:0: Attached scsi removable disk sda
[17184821.280000] sd 0:0:0:0: Attached scsi generic sg0 type 0
[17184821.528000] sda: Unit Not Ready, sense:
[17184821.528000] : Current: sense key: Unit Attention
[17184821.532000]     Additional sense: Medium format corrupted
[17184821.552000] sda : READ CAPACITY failed.
[17184821.552000] sda : status=1, message=00, host=0, driver=08
[17184821.552000] sd: Current: sense key: Unit Attention
[17184821.556000]     Additional sense: Medium format corrupted
[17184821.560000] sda: test WP failed, assume Write Enabled
[17184821.564000] sda: assuming drive cache: write through
[17184821.580000] sda: Unit Not Ready, sense:
[17184821.580000] : Current: sense key: Unit Attention
[17184821.580000]     Additional sense: Medium format corrupted
[17184821.604000] sda : READ CAPACITY failed.
[17184821.604000] sda : status=1, message=00, host=0, driver=08
[17184821.604000] sd: Current: sense key: Unit Attention
[17184821.604000]     Additional sense: Medium format corrupted
[17184821.612000] sda: test WP failed, assume Write Enabled
[17184821.612000] sda: assuming drive cache: write through
[17184821.616000]  sda:<3>Buffer I/O error on device sda, logical bloc
k 0
[17184821.616000] Buffer I/O error on device sda, logical block 0
[17184821.616000]  unable to read partition table
[17184821.620000] Buffer I/O error on device sda, logical block 1
[17184821.620000] Buffer I/O error on device sda, logical block 2
[17184821.620000] Buffer I/O error on device sda, logical block 3
[17184821.620000] Buffer I/O error on device sda, logical block 4
[17184821.620000] Buffer I/O error on device sda, logical block 5
[17184821.620000] Buffer I/O error on device sda, logical block 6
[17184821.812000] sda: Unit Not Ready, sense:
[17184821.812000] : Current: sense key: Unit Attention
[17184821.812000]     Additional sense: Medium format corrupted
[17184821.836000] sda : READ CAPACITY failed.
[17184821.836000] sda : status=1, message=00, host=0, driver=08
[17184821.836000] sd: Current: sense key: Unit Attention
and then it continues to repeat itself.
-- 

_____________________________________________________________
Art Alexion

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alarm.  Info @ 
http://mysite.verizon.net/art.alexion/encryption/signature.asc.what.html
_____________________________________________________________

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