Hi, can anyone tell me whether it is possible have a harddisk installed with Windows (say, Windows 7 or XP) and use it to boot directly on a Mac? That means, a single external removable harddisk installed with Windows which can be booted on both PC and a Mac. Is it possible to simply take a Windows installed harddrive and boot it on the Mac? And after using it on the Mac, the same Windows harddrive can be booted on a PC again? I do understand that Parellels has Transporter, but what I do know is that it is some sort of "migration". Once "migrated", the Windows cannot be booted on a PC again. Am I right? (So, this solution won't work.) My scenerio is that I use a Mac at home, but I need to boot into Windows to do some office work (of course, using my Mac). This Windows on an external harddrive must also be bootable on a PC whenever I bring to work in my office. It does not matter what is the technology: Boot Camp, Parallels or some other ways. Could someone please give me some hints on how if this is possible? Thanks and appreciated! Kevin.