Originally Posted by sinclair_tm

The Mac will read the drive just fine, it just can't write to it (unless it is formatted FAT32 by chance). If you want to use the Windows setup as is, there is a way. You will need to buy either VMFusion of Parallels. These are programs that create virtual computers, or in other words, a software based computer that Windows thinks is a real hardware computer. Once they are installed and running, you can plug in the USB drive and they will either use it as is, or allow you to convert it to a virtual PC that they can use. You will need the Windows product key again for it to work right, as it will see a hardware change and ask for the key to reactivate.