SUCCESS!
I had both DOS 6.0 and DOS 6.22 here. 6.22 wouldn't work. But the MSBACKUP from 6.0 worked.
Hooray!
Heh... then I had to download PKZIP 2.5, put it on a virtual floppy into the virtual machine to compress them into virtual floppies, and then for I had to download Winzip for my host...
I worked extensively with Willy's source code from fpns.net. Got it to compile in Visual Studio 2005, and read the contents of the backup files. Unfortunately, the decompression algorithm is failing. In the process, I learned that it's likely the backups were created with DOS 6.2.
A brief...
thread613-18860
I have copies of three backup floppies August 9 1993 (according to the filename) created by Norton Version 1E (according to the first few bytes of the files). I'm pretty sure the three files constitute the entire backup set, though I can't be certain.
Based on the thread I'm...
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