Making an RT-11 boot disk

RT-11 uses, IIRC, 16-bit block pointers... 65536 x 512 bytes == 32MB, the largest swath of a big drive it can grab in one chunk. I've never personally run RT-11 with a disk over 32MB, so I don't know how it's done, but I know it can be done. It might or might not depend on what version of RT-11 you have. I *think* if you have MSCP support, you always have the ability to have multiple partitions on your large drives, but someone with experience on new(ish) hardware should chime in. The largest machine I ever ran at home was an 11/23 with a couple of RL drives. When I did use RT-11 on an 11/73 with a large disk, it was under TSX-11, and without the docs in front of me, I'd hesitate to quote technique from memory. You should be able to find what you are looking for in the RT-11 docs for versions of RT-11 > 5.4, at least. Dunno about < 5.4. -ethan