I think folks are being too MFM-centric in their
responses to this question.
"ImageDisk can identify, read and write any disk format that a PC floppy
controller can handle — so *it can do most FM/MFM formats*, but not Amiga
disks with odd timing, or Commodore 8-bit disks with GCR encoding. "
GW can do the same, but can also handle GCR encoded disks, the Amiga disks
noted above, and it might be able to do older Apple Mac 720K disks
It's really not fair to compare ImageDisk to GW. ImageDisk is limited to
the configuration options and assumptions built into the FDC. GW has no such
restriction.
Exactly.
Some other disk formats can be done with appropriate special software.
The flux transition device is the hardware for when that approach isn't
possible.