[Galahad/FLT]

Originally Posted by BarryB

Did Disk 2 ever have any errors? Have another version 1 copy that shows this for Disk 2 in disk-utilities:

T13.1: sectors 3,4,5,6,7,8,9,10,11, missing
T14.1: sectors 6,7,8,9,10,11, missing
T15.1: sectors 9,10,11, missing
T16.1: sectors 11, missing
T17.1: sectors 3,4,5,6,7,8,9,10,11, missing

Disks are clean, no dirt/mold on the surface and Disk 1 & 3 dump OK! Cleaned the upper surface to make sure but still get the same errors, even dumping those tracks on another drive, so bad disk or faulty mastering, leaning towards bad disk myself!

I would say bad disk. The reason is that PDOS disks need to be prepped first with a special PDOS formatter that sets the serial key for decoding, and its a one pass utility, where it can have start sector and amount of sectors to format, but it has no flexibility to produce the format like you describe.