> > sd 11:0:0:0: [sdd] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE > > sd 11:0:0:0: [sdd] Sense Key : Medium Error [current] [descriptor] That is the drive complaining about a bad block. > > Descriptor sense data with sense descriptors (in hex): > > 72 03 13 00 00 00 00 0c 00 0a 80 00 00 00 00 00 > > 00 5b 23 bb > > sd 11:0:0:0: [sdd] Add. Sense: Address mark not found for data field > > sd 11:0:0:0: [sdd] CDB: Read(10): 28 00 00 5b 23 4f 00 00 80 00 Which in my experience usually comes from - The disc being unable to find the data block - A corrupt indirect block in the file system leading to a requst for an out of range data block In theory it could be an on the wire bitflip but thats a bit too consistent to believe. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html