Hi everyone! I'm using a MacBook Pro with three partitions: Macintosh HD: HFS+ DATA: Fat32 XP: NTFS I've installed this using the following guide: http://twoyearstwodays.blogspot.com/2006/05/bootcamp-sharing-data-between-osx-and.html XP got all buggy on me (I think it has to do with the device-drivers, since I kept hearing those "device-removed/device-added"-kaploinks) and decided to reinstall XP. However, after reformating the XP drive, copying installation files (first step in the installation process) and rebooting I get a disk error and can't continue the installation. OSX boots fine (thank god), but my XP partition (that I used to be able to see) is gone. In Disk Utility it's marked as disk0s4 and is unmountable. Googling around I found this post, which kind off confirmed my suspicions: http://macosx.com/forums/boot-camp-os-virtualization-mac/293147-error-xp-install.html Together with this quote from the guide: I guess I somehow need to hide my Fat-32 DATA partition from the XP installation-process. Am I right in this assumption? Does anyone know a way of doing this, without reformating my DATA partition? I can back it up, but I'm really not a fan of such drastic measures (yeah, I'm a wimp, so sue me ). Is there something else that I could be doing wrong here? Thanks in advance for any help! Yours, Andra.