I am using minivmac 3.1.2-lx86, running it from an xterm in PCLinuxOS 2009.1.
I have tried writing 3rd party diskette images (that were intended for 800k diskettes in the real world), I have tried writing 800k versions of System 7.0 diskette images that I downloaded from Apple; I have tried writing those images using Diskcopy 4.2 under both System 6.0.8 and 7.0.1, all images fail to write...
2009-12-07 04:24:35 UTC in Mini vMac