Interactive unix system V release 3.2 and RLL

[Karl L. Quackenbush]

I am unable to get Interactive unix to work with an Data Technology Corporation
controler.  I keep getting the message "unable to open device /dev/rdsk/0p0" 
throughout the installation and then it just finally aborts the 
installation.  I know there is no problem with the hard disk as it works 
fine with other versions of unix from other companies.  I have also tried using 
the mapping mode on my harddisk controler to map it from 26 sectors/track to 
17 sectors/track and it still does not work.  Any help would be very much 
appreciated.