I'm not familar with Paritition Magic, but using Acronis Disk Manager/Boot Loader I have the following set-up. XP Home Install C:\ Has Windows on it, along with prog files and boot files. (Primary, Active) M:\ Is my FAT32 partition with all my media files (Logical) R:\ Is my WinXP recovery install - this is invisible, and can be made (in)visible from Acronis (Primary, Hidden) I say it is R, but only for ease of naming. XP Home Recovery Install C:\ Is the primary Windows install from above E:\ My Recovery XP files, progs etc - Why it chose E rather than D, is forever a mystery. M:\ Media as above This install sees all 3 partitions. So, I would try doing a minimal install of XP to a small C partition, then continue installing XP to other larger partitions as neccesary. Once done, go into every XP install, and change drive letters (other than the self) to be consistant. Once everything works, have a poke around Partition Magic/Boot Magic, I expect the option for making drives invisible to one another is in there somewhere. I've only just set this up myself, hope it helps.