On 08/12/2017 05:30 PM, Richard Cini via cctalk wrote:
> OK, so this is interesting. Since the CW was working using the test
> previously described,
> I tried imaging the non-critical disks. None would read successfully. So, I
> everything to the other machine with the better floppy controller and IMD
> do much with them either using the “analyze” option. It read some tracks, but
> not all,
> and I got bored after about 30 tracks. They definitely are 512b sectors but
> the gap
> lengths were crazy (G1=210 and G2=255).
This is where I'd suspect that the originals were written with a
mis-aligned drive. I've run into this myself and have a drive reserved
for "tweaking" the alignment. That is, it's not suitable for writing
disks as the alignment is fiddled with, depending on requirements.
Of course, disks written with a mis-aligned drive will read just fine on
the same drive.