>I'm guessing probably Make Book Record. I don't know - someone else told me >that's what you need to do. It stands for Master Boot Record, which is what the boot sector above the first partition is called. Anyway, this is independant to any of the other partitions on the disk, so this is why you have that prob. The MBR switch simple sets the MBR to use command.com. Cya. MikeM