I don't use linux and I have no idea of the format of the .d77 disk format. From best I can tell there is no consistent size (maybe defined in the header)?
I'll grab a hex editor and see if there is any consistency in size between the images. I'm just surprised there is not some tool out there for this. Most other systems seem to have various tools for dealing with disk and cassette images and conversion.
Last edited by Madmab; 01/25/17 10:45 PM.