Tom Ivar Helbekkmo wrote: I've managed to do this by editing the ULTRIX install script, 'install.1', to support installing from RA disks. It turned out to be quite simple. I have media and licenses for ULTRIX and UWS V4.3 (My media is AG-ND76E-RE, September 1992), so that's what I used for this experiment. I don't know how ULTRIX 4.2, 4.4, or 4.5 would differ, you will have to experiment. I just used dd to dump the CD-ROM image (i.e., "dd if=/dev/cdrom of=ultrix.iso bs=512") I then set up SIMH with the following commands. You may be able to play around with this and choose a different disk setup, but this is what worked for me: set cpu 64M set rq0 ra90 set rq1 ra90 set rq2 cdrom set rq3 disable attach rq0 d0.dsk attach rq1 d1.dsk attach rq2 ultrix.iso ULTRIX will see rq0 as /dev/ra0*, rq1 as /dev/ra1, etc. RA90 is supported under ULTRIX 4.3, RA92 is not, and RA60 failed to work for me, so my disk choices were limited. Your milage may vary. At the sim> prompt, type "b cpu" to boot the CPU. Then at the VAX You'll be greeted by the ULTRIX installer. It has a menu like: Select one of the following options: 1) BASIC Installation 2) ADVANCED Installation 3) System management Choose "3", which dumps you at a standalone shell, so you can edit the installer script, 'install.1' The only editor available in this environment is 'ed' (The Standard Editor!). Invoke it with the command: # ed install.1 If you have the same ULTRIX media I have, then you can just use these commands: 173s/`btd`/ra2/ 193s/rz/ra/ w q If you have a different version of the installer, the line numbers might be different, so you'll have to poke around in the file yourself. Here's what to look for: Line 173 reads "BTD=`btd`". On SIMH, /bin/btd returns an empty string, so we're just explicitly setting BTD to 'ra2', the CDROM drive. Line 193 is part of a case statement that switches on the value of $BTD, but there's no support for 'ra', so we'll just change the line that reads "rz *)" to "ra *)" instead. Voila! The script should now work. Type "w" to write out the file, "q" to quit. Then type ^D to exit the shell and return to the installation script. This time, choose "2) ADVANCED installation", and select the first RA90 device as the root disk. You should be able to install normally from here on out. -Seth