I am now using the Rescue Boot Disk to perform my backups and TI Home v11 informs me that a sector-by-sector backup will be performed because a partition is flagged as being corrupted. Unfortunately, TI 11 is not kind enough to tell me which partition from the 4 disks (5 partitions total) is invalid. By selecting and de-selecting various partition, I found out that the culprit is the Dell diagnostic partition on the first disk. I booted the computer in Setup mode and did a proper exit and shutdown, I tried to perform a chkdsk of that partition from Windows but the OS will not let me assign a drive letter to perform the operation. Short of re-creating the Dell diagnostic partition, how do i correct this problem so that TI 11 can backup this parition in a non sector-by-sector mode? I never had this problem with TI v9 and v10.