I'll start by apologizing for duplicating an existing thread, but there's a pretty huge number of posts to read through and I'm not really sure what to search for, so... My (new) laptop came pre-installed with Vista Ultimate-32, no setup DVD provided. Used DD10 to re-partition creating additional one for WinXP Pro. Installed OSS in Vista. Re-booted with WinXP and installed in second partition (drive E. Lost ability to boot Vista afterwards, but fixed that with borrowed Vista DVD. Now I get a Windows multi-boot selector but no OSS. Booted to Vista then re-installed OSS. Now both OSes appear in OSS and I can hide the XP partition from Vista but OSS will not allow me to hide Vista partition (drive C from XP. I'm afraid that Vista drive being visible poses all sorts of potential problems when working with XP (like OS and driver updates). Lastly, even with OSS working, when I choose either XP or Vista in OSS I still get a Windows multi-boot menu before I can start either one Any help would be appreciated.