I have a copy of Windows 7 Enterprise on my USB disk. I just purchased an ASUS U47A and I wanted to install it. I booted to the disk and I formatted the drive. When I went to install it said I couldn't because my hard drive partition was GPT. So I went in, formatted the disk and booted to cmdline. When I used diskpart to change the partition of disk 0 (the only hard drive) using change mbr, it said I couldn't because it was one that is unchangeable. (I.E. CDROM/Floppy) Aren't hard drives' partition status changable? Or did I screw up my computer horribad?