In article <nospam-8D665D.14283527022013 at news.chingola.ch>, Paul Sture <nospam at sture.ch> writes: > > And IIRC 11/780 boot floppies were written in RT-11 format, which was a > lot simpler. IIRC, 11/780 boot floppies had a boot block for the LSI-11, and VMB.EXE was stored on the floppy. VMB.EXE reads Files-11 disks and finds the OS.