My Win 200 runs fine, FAT 32 though. Used to be NTFS had a 7 1/2 GB limit for the boot drive, I don't know if that is still true. I saved and opened a 470 Mb PZ3 file, and rendered it, so I think it is pretty stable. I don't see any real advantages to NTFS except for setting drive access privleges. I refuse to play Bill's game of "Change your OS every time I need the money", BTW!