On Mar 24, 5:36 pm, rhohler <rick.hoh...@gmail.com> wrote: > And what about 13 vs. 16 sector disks? For that, you need a specialized tool. Linards Ticmanis built a 13-sector capable ADT, and it's available here: http://mirrors.nsa.co.il/apple_ii/unsorted/adt-1.22-13-sector.zip And have a read here: http://mirrors.nsa.co.il/apple_ii/unsorted/adt-1.22-13-sector.txt