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PID: Synchronet 3.19c-Linux master/c6e83357a Apr 13 2022 GCC 8.5.0
TID: SBBSecho 3.15-Linux master/c6e83357a Apr 13 2022 GCC 8.5.0
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BBSID: MAGNUMUK
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NOTE: FSEditor.js v1.104
Dear all,

I have recently re-acquired an Amiga 1200, which seems to be working very
nicely. I cleaned the floppy heads with some isopropyl alcohol and since then,
it has also been doing a good job reading floppies - to the point where this
feels fairly reliable again.

I've hit an issue though trying to transfer files via CrossDos from another
machine/OS, using PC formatted disks as a common medium. I format the drive as
PC0: on the Amiga, then verify the disk on the other machine where it seems
very happy. I can then open the disk, copy across the file of interest, and
again this all happens smoothly. The problem starts when I attempt to use the
floppy on the Amiga again. As soon as I insert it, I get this error:

"Error validating File Allocation Table to device PC0: Results uncertain.
Proceed at your own risk."

Sometimes, the file is there but it cannot copy across beyond a few bytes.
Sometimes, the file name is corrupt and I don't dare copy it. Sometimes, the
disk seems completely broken, with PCO:??? on the Workbench. If I then move it
back to the other machine/OS, it then says the disk is unformatted.

I don't think it's the floppy disk itself, as everything seemed smooth and
error free until that point of the error message. I wonder whether it's the
floppy drive on the non-Amiga, on both even, with issues of head alignment.

If it is, is there much that can be done to sort of the heads? What symptoms
do misaligned heads give?

Many thanks!
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