1. The IDE64 convention for the boot file is to start it with ! i.e. rename your boot file to "!boot,prg" so it can be run with F1.
2. Can you support .D81 files? Then many more apps could be fit on the virtual disk! Svar: 1. No problem, I thought I already did that, but obviously not this time. ;)
2. Of course. I just have to start with something, and I still have some problems with this. But emulating via d81 would be almost the same, just another offset for track/sectors.