http://www.microsoft.com/technet/tre...k_dec_lgsc.asp
Mark - several months ago, I used to see a steady stream of people who had
lost their optical drives unexpectedly. Invariably it was due to a quirk
associated with one or more CD-burning app's. Evidently those app's modify
a small [but significant] entry in the registry.
In any case, to answer your orig Q; yes. You can certainly use 4 IDE
devices with another 2 on the Serial controller. But, before tinkering with
the registry, I would like to toss out an idea: What about a little
experimentation with the boot sequence in the BIOS? Since you didn't say
otherwise, I'm assuming that the PATA PRI/MSTR is your boot drive...but
perhaps the boot sequence has been altered since you added the Serial drive.
Or perhaps the boot sequence is unchanged...but now that you have a Serial
drive installed, it makes a difference that was previously ignored(?)
Have a snoop around in there and see if you can effect the desired
performance. Meanwhile someone else will probably toss in some additional
feedback, and we'll go from there.
Ron