So I have 900GB hard disk and I installed Windows 2000 on it. Windows 2000 made a 127 GB partiton. I rezized that to 29.4 GB. Then I created a 94.3 GB partition for Windows 7. The daul boot works, and I can get into Windows 7 and 2000. But I have 800GB of unallcoated space. If I make the 7 partition bigger or make a 800 GB partition, I get a BSOD on Windows 2000. (inaccessible boot device). The only way to fix is to delete the 800GB partition or make the 7 partition.