I've got a PC with an Intel 82371AB/EB PCI IDE Controller and everything was fine until I added a new hard disk and then removed it. I now find that I can no longer see my CD-ROM though Windows '98 although it is definately connected OK as I can see it from DOS.
When I check my '98 config I find that the Intel Controller itself is working fine - there are two 'child' devices however that aren't working and my CD-ROM won't auto-detect. The two devices that are failing are:
Primary IDE Controlller (dual fifo) and
Secondary IDE Controller (dual fifo)
I've tried everything I can think of, including removing the offending device and attempting a reinstall, but all to no avail. I remember having a similar problem on an Elonex machine a year or so ago (although under '95) but can't work out how to solve the problem. I suspect the failure of these two devices is what is also preventing my CD from being detected.