@superfrog76
I used to have the problem when trying to format HD diskettes on a DD drive. Is that what you`re doing? The problem was that the DD drive wasn't strong enough to overcome the formatting already on the disk (FAT16?). I worked around it by bulk erasing the disks before putting them in the Amiga.
It's better to use DD floppies if you can find them.
Also, some of the old viruses caused what you're describing, too. Is there any chance your Amiga is infected?
