I was testing a Windows 7 Image backup, and the restore process was taking forever. It should have taken about 30 minutes, and after an hour (when I stopped it) I estimated (using the number of progress bar ticks) it would take about 2 days to finish. I rebooted and in the BIOS settings I changed the SATA Emulation from AHCI to IDE (there are AHCI, IDE, and RAID) and tried the image restore again. The restore proceeded normally, it took about a half hour, but when finished the PC would not boot. It looped, trying to IPL. I changed the SATA Emulation back to AHCI and everything it booted ok and everything seems to work fine. I went to another PC and tried, it only boots in AHCI mode an not IDE mode (there is no RAID option).
Any ideas why I am having a problem with this? Full disclosure, I used a different PC's recovery CD (the second PC mentioned above) to boot and perform the image restore. Could that be causing the very slow restore performance or does the AHCI/IDE issues indicate a more fundamental problem?
Edit: I looked on my home PC, it has IDE, AHCI and RAID modes. It is set to RAID and will not IPL when set to IDE or AHC.