It seems that I can't completely understand the Quota managemet in Win XP Professional. The System Restore needs at least 200 Mb or so on C: to work, right? So I use the Quota to limit disk space to 4.5 Gb (my C: i 5 Gb large). However it doesn't seems to have any efect: I can still put files and more files until all the space on C: is eaten up and the SysRestore suspends itself. I imagined that when I reached 4.5 Gb fullness ot the C: the Quota would deny me access until I freed up some space to meet up the 4.5 Gb Limit. What am I doing wrong?