As promised, the update. The last version I received from Pete is indeed the OnTrack 7.09 version that works with all disks. GREAT STUFF!! It recognized immediately my HP C2965A. On that drive it says: 988 cyl 16 hds 52 sect 420.8 Mb OnTrack maps that differently, but what the heck: it works perfectly. A bit strange though is that I have a C: (boot)partition of 420 Mb *and* a D: partition of some 418 Mb. The drive clearly says 420.8 Mb, but OnTrack says 818 Mb ....? Perhaps word -> byte? just guessing. Anyway, the DECpc 320P is on its way to run E11 and SIMH! At least, the PDP-11 simulation runs on a PC .... but it's a *DECpc* :-) thanks for all replies! - Henk, PA8PDP. PS. Dave, if you find a newer version I would be glad to receive a copy to store it for later requests. Think of your version being backed up at an other continent :-)