Try this, boot from the DVD, at the first window, where it says pick your language, do not pick the language, hold down the shift key and press F10, which will bring up a command window. Make sure the only disk connected is the one you want Windows installed on. Type diskpart and press enter. Wait for the command prompt to return saying diskpart, type list disk, you should have only 1 disk. Type select disk 0 (number 0 not letter), press enter, diskpart will reply disk 0 is the selected disk, type clean and press enter. Diskpart will reply diskpart cleaned the selected disk. Type create partition primary size=200 and press enter. Diskpart will reply that it has created the selected partition. Type select partition 1 and press enter. Next type format fs=ntfs quick and press enter and wait until it replies that it has formatted it. Type active and press enter, diskpart will respond saying it has formatted the selected partition, type exit and press enter, type exit a second time and press enter. You will now be back at the select your language page. Continue as normal, select custom install, and install Windows on the 200MB partition,. Everything else will be unallocated. The 200MB partition will become the system reserved partition.