Thanks, Oleg!! Thats it! I wasted a day trying to find an answer.. You can convert these images to simh .tap files using VCP command and the simh itself :) at tq f77.tap at rq rsx11mplus_4_6_bl87.dsk b rq ... >VCP CON F77.TAP/TAP/DRV:MU/MOU:FOR >MOU MU:/FOR >VCP COP MU1: MU: