To use Greaseweazle with a 640kB drive (5.25, 80 track, DSDD) use the acorn.adfs.640 definition (diskdefs); it works like a charm ! More here: https://computarium.lcd.lu/literature/COMPUTARIUM_CREW/MASSEN/HANDLING_VINTAGE_MEDIA.pdf
Francis PS: I am looking for a Kermit version usable with my P2000C (it is the 2010-1 model, very similar to the 2012); everything I tried until now did not work correctly...
