Advertisements I have a TCD540040 and I'm trying to replace the 40g maxtor TiVo drive with a Caviar 320g hd...i have everything connected correctly in my PC, i booted the Weaknees_lba cd and entered the following command mfsbackup -f 9999 -so - /dev/hdb | mfsrestore -s 127 -r 4 -xzpi - /dev/hdd and got the following error message mfsbackup: Backup failed to startup. Make sure you specified the right devices, and that the drives are not locked. I tried replacing the drive letters, but no success. I understand that people have had this problem in the past, but i couldn't find any threads with a good explanation of whats going on....HELP!!