sdvl, All excellent advice, most of which I do already. I have 2 HDDs, both with 4 partitions. On the 1st drive, I keep C for windows only and a few odd things, like driver installations, AV, etc. I have a dummy Runtime on C, but that's only for final product checking. D is poser 4 and current projects only. E was poser 5, but I won't be reinstalling it, so P6 will go there. I don't use linked Runtimes either, to make sure my products can't get bad paths. The 2nd drive is swap and 3 backup-only partitions. I always do a clean install of the OS and all drivers and apps. And when I install poser, I chuck out practically everything that comes with it. My Runtime's less than a gig. Thanks again for the info. I'll definitely go with the swap on the 2nd HDD. mac