Jerome Fine replies: I totally agree - for any commercial application, the cost of a real PDP-11, including maintenance or proper hardware backup, is almost always more than $ US 2999. On top of that, the performance of even a current low end Pentium III is about 10 times a PDP-11/93. So for most commercial applications, Ersatz-11 is far superior. NOPE! There are many things I would appreciate having. I know the difference between what I need and what I want and what I would enjoy. And just because I can afford something does not mean I need it - in fact more often than not, if I can afford something and it would be "nice" to have it, being able to say "YES!" is most often 99% of the reason why I don't need to bother. I might need some additional tools in W98 to manage without this aspect of the MOUNT command in Ersatz-11, but it sure makes things much easier. The other feature that John Wilson added is the ability under Ersatz-11 to associate a separate controller with each command as: MOUNT DUA0: SCSI4: SET DUA CSR=172150 SET DUA VECTOR=154 MOUNT DUB0: SCSI5: SET DUB CSR=160334 SET DUB VECTOR=134 even though the drives at SCSI ID=4 and SCSI ID=5 are on the same 50 pin SCSI cable connected to the same host adapter on the PC - so the above is not possible (yet) on a real PDP-11 under RT-11 with just one SCSI host adapter. By the way, under RT-11, you can COPY DUX.SYS EUX.SYS but don't try to boot from EUX.SYS until 7 words with a RAD50 value of DU are changed to EU. Under RT-11, this means that if I have TWO SCSI hard drives of 2 GBytes each, I can set up TWO MSCP device drivers DUX.SYS and EUX.SYS, each one having 64 active RT-11 partitions. Thus I can reference up to 2 GBytes on each hard disk drive (or DOS/W95/W98 hard disk file) simultaneously. Since the current price of a 40 GByte EIDE hard drive is only about $ US 100 and not much more for an 80 GByte hard drive, having a few 2 GByte files is not so unreasonable. Sincerely yours, Jerome Fine -- If you attempted to send a reply and the original e-mail address has been discontinued due a high volume of junk e-mail, then the semi-permanent e-mail address can be obtained by replacing the four characters preceding the 'at' with the four digits of the current year.