I've just had the chance to check out my new 19Gb HD and OS3.9 yesterday and today.
While reinstalling things, I found out that DS0 didn't work.
DS0 is a DOSDriver for DF0 that uses diskspare.device and allows almost 1000Kb per disk.
I have a lot of disks using this format, but OS3.9 doesn't seem to like it. I downgraded to 3.1 for a while, but got the same result.
"Please insert a disk into ds0" is what usually appears.
I can't find my ds0.lha on my disks anywhere. I've checked aminet (for ds0 and diskspare.device), but didn't get the dosdriver :-(
Can somebody out there help me?