On Sat, Apr 30, 2022 at 12:33 PM Douglas Taylor <dj.tayl...@comcast.net> wrote:
> I was able to mount the partitions (as shown below) and actually extract > the entire 65K partition to a *.dsk file that SIMH was able to mount and > read. > This is what I was trying to do. Get files from the RT11freewarev2 cd > into SIMH. From there I can get them to my real PDP11 hardware. > Some of the files are binary so this process is necessary. > > One comment - when you execute a mount command it takes a minute or 2 to > decompress the file, so be patient! > One question - How did you know how much to skip? > The README.TXT file said which 'logical' volumes within the physical device contained RT-11 filesystems, and it's known that each volume is 32MB (65536 512-byte blocks). If each 'logical' volume is 32MB you just multiply. volume 13 (numbered from 0) will start at 13*32MB = 416MB. The README also indicated that you could mount from the ISO directly using the DU device driver but I've never tried this myself. Presumably this would involve accessing DU13:, DU14:, etc. -ken