Hi, the following behaviour seems like a bug to me. First, my setup: I have a Boot Camp installation of Windows XP on my local hard drive (as a FAT32 formatted partition) that I want to use in Parallels. I also have an external mass storage device that's connected to the notebook via FireWire. The media has two partitions, one formatted as NTFS and the other as FAT32 (incidentally, neither of them is bootable). Now, whenever I try to boot my Boot Camp partition in OS X, I get the following error message: Apparently, Parallels is confused by the existence of additional partitions. To solve the problem, I have to exit Parallels (!), disconnect the external drive and then restart Parallels. After I have booted Windows, I can reconnect the external drive. This is somewhat bothersome and I actually don't see why the existence of additional non-bootable devices should trouble Parallels unduly.