I did a Windows 7 "full install" onto my Gigabyte MB RAID equipped quad core 64bit system. "Nominally" all went to completion without any problem whatsoever. The only problem I have is when I boot up. 1) If I boot up WITHOUT the Win7 64bit install disk in the drive, I get an error message during boot that says "NTLDR not found" and the boot attempt fails and you have to hit ctrl-alt-delete to continue. In this configuration, boot cannot be completed. 2) On the other hand, if I simply leave the Win7 64bit install disk in the CD/DVD drive, the boot up continues through the failure point and stops at a text window which appears to be a "dual boot" type of window. This window offers to boot up using "Other Operating System" or using Windows 7. a) If I select "Other Operating System", I get a message saying that this "other" OS was not found. b) If I select "Windows 7", then the boot proceeds normally to a satisfactory conclusion and all W7 functions operate as expected. Notes: 1) The system I had installed was Win XP but I did do a "fresh install" to get where I am. No "upgrade install" was offered and none was looked for. 2) The Gigabyte system is a new one with "built into the firmware" drivers for RAID and so W7 did not ask for and was not given any drivers to load during the install. The RAID system is working just fine. 3) I did a "repair install" and it went successfully to completion without changing the situation. Question: How do I get rid of this (bogus) dual boot option presented to me by W7?