I have happily used FDISR on my XP computer for a couple of years. Just got a new computer with Vista Home Premium & want to use FDISR again. Problem is that I want to shrink my C: drive partition to control size of snapshots. However, Vista won't let me shrink the C: partition to less than 320GB (out of 455GB total), whereas in XP, my C: partition was 35GB. My data is in a separate partition. Won't my snapshots be huge, making it virtually impossible to have several snapshots, or am I overlooking something basic?