On Fri, 17 Jul 2015 11:18:34 +0200, Hans-Ulrich Hölscher <hoelscher-kirchb...@freenet.de> wrote: > >>> That sounds like the really easy way to do it. Does it copy>> track 0 of >>> RX01/02 floppies?> > I had some experience with RX01/02 floppies when >>> reviving LSX using> logical copies of the disks. Track 0 will be logically >>> at the very > end. The problem is with media size 256256: if the logical >>> block size> is 512, two physical 128-byte sectors (the boot sectors) will >>> be> lost, and the logical copy will be 256000 bytes long.> > Leo > > I must admit I used my VMS MOUNT/FOR & COPY method only with RX50 floppies > and RD and RZ disks. > Leo, what method did you use? > I was quite sure my method catches ALL sectors ...
On some Unix V6, "od /dev/rx0" or similar was used, and the serial console output was intercepted. Disk devices are block devices (raw access to block devices not yet invented, so no "/dev/rrx0" :( ), and the block size is 512, thus only 256000 bytes were returned. Leo _______________________________________________ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh
