On Mar 21, 2008, at 7:11 AM, Hans M wrote: > 4. I booted the MacBook Pro, and started BootCamp Installer. > The manual was fine, but continuing there is a message I can't > install Bootcamp on the hardisk. It has to be reformatted in the > GUID mode, AND WHAT IS THAT? > > Anyone knows the trick? > Whats' GUID formatting, I can't find that option in the > Disk Manager. > You need to reformat your new drive since Intel-based Macs used the GUID Partition Map. When you do, you will use all of your data so back it up. Then, Open Disk Utility, select the drive (not the volume), click the Partition tab, select the number of partitions you want from the pop down menu, click Options, select the GUID Partition Table and click OK. -Bill