On 7/15/2006 at 3:09 PM Fred Cisin wrote:
GCR
MFM without WD/IBM sector headers (Amiga)
certain address marks
with some FDC's FM
with some FDC's 128 byte sectors
damaged disks (both accidents and some copy protection)
Also:
Hard-sectored
"Strange" recording methods (e.g. OSI)
--Chuck