I added a disk and removed 2 SCSI Disks "WPA - ...preventing checking license... Error Code 0x80090006" Yes, even though this XP version has no WPA. Found following in www.annoyances.org: switched drives, formatted the old drive, and got this error. I booted up from a BartPE CD (google for that, don't have url handy) and loaded up regedit. Once in there I highlighted local machine, and did a load hive. I loaded up c:\windows\system32\config\system and once in there I navigated to the MountedDevices key. Well, there's my P: drive staring back at me. So, I opened up that \DosDevices\P: key and did a Select All, Copy, and then cancelled out of there and opened up the \DosDevices\C: key. Then I did a Select All again, and Paste. Exit regedit, reboot, working. woot. This worked very well, but after i changed the active Partition and again 0x80090006 occured. After reboot the 0x80090006 Problem occured. I have a multi boot PC and if you encounter this problem try to look at your boot.ini bevor trying anything else. It worked fine for me, the boot partition was chanched to partition 5. As a maximum of 4 primary partitions are allowed it was clear.
