First post, by Gahhhrrrlic
I hope this is the appropriate section for this...
I tried to create a dual boot on one of my newer computers in the same way I am used to doing so in the past - install xp first on one physical drive and then install 7 later on a different physical drive. Because my UEFI BIOS has the most excellent feature of allowing AHCI and IDE to exist concurrently on different SATA ports, I don't need to do any switching. The OS boot menu works just fine to select systems.
The problem first occurred after I installed 7. I didn't notice it right away because everything else worked flawlessly but this device appeared under XP with the yellow warning symbol and was identified as unknown PCI device. Then I realized I had no DVD drive in my computer. It disappeared so I'm assuming that's what the unknown device is, since that wasn't there before installing 7.
I have tried all the usual things like uninstalling the device, and the IDE controllers but that did nothing. I am at a loss and would like to know if anyone here knows how to get the drive detected again under xp. It's just a cheapo LG super multi with mdisc and it works fine in 7. I'm sure this is some software thing but I've never had it happen before. Thanks.