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I got an A4000 the other day, which has a problem with floppy drives. DF0: is recognized in the bootmenu, and it does show up at the WB, with ???? as a label.

When I try to acces it, I get the msg 'No DOS-Disk in DF0:'. I've tried other floppy units out of my A2000, but all give the same results.

Any ideas?

[Desler]

Sounds like your drive may have a faulty or needs to be cleaned. Do you have another drive you can plug in instead?

[Castellen]

If you have tried a known working floppy drive, you might want to try
another cable as well, sometimes these can go faulty.

Failing that, it's possibly a motherboard problem, either with Paula,
which handles read/write data, or one of the CIAs which handle disk
control signals.
There's other discrete logic in the circuit as well, but generally
this is fairly reliable.

Parts can be easily obtained from a dead A600 or A1200. You just need
to learn SMD soldering, to take it to someone who knows.

Anthony.

[Castellen]

If you have tried a known working floppy drive, you might want to try
another cable as well, sometimes these can go faulty.

Failing that, it's possibly a motherboard problem, either with Paula,
which handles read/write data, or one of the CIAs which handle disk
control signals.
There's other discrete logic in the circuit as well, but generally
this is fairly reliable.

Parts can be easily obtained from a dead A600 or A1200. You just need
to learn SMD soldering, to take it to someone who knows.

Anthony.

[Castellen]

If you have tried a known working floppy drive, you might want to try
another cable as well, sometimes these can go faulty.

Failing that, it's possibly a motherboard problem, either with Paula,
which handles read/write data, or one of the CIAs which handle disk
control signals.
There's other discrete logic in the circuit as well, but generally
this is fairly reliable.

Parts can be easily obtained from a dead A600 or A1200. You just need
to learn SMD soldering, to take it to someone who knows.

Anthony.

[KidIce]

Sounds like your cable is plugged in backwards, wrong or not at all or is bad.

[Castellen]

Oops, sorry about that, something went drastically wrong and my
response got posted 3 times!
Does the "cancel post" button actually mean "send another 2 times"?

Thanks for your input. I've tried both other drives and another cable, to no avail. Guess I'll have to blame Paula :-/

Seems I had yet another old Amiga floppy drive lying around, and this one works :-). Case closed, with thx to all that replied.