Master boot record
Master boot record is the first physical sector of a boot device (floppy, hard disk, or CD-ROM, etc.) During the process of booting up the system uses the master boot record of the first device. It usually contains a small program-loader and a disk partition table. The program-loader uses the partition information (or a partition table) stored at the end of the sector to determine which partition is bootable, then attempts to boot from it.
Testimonials and User Comments
Its an excellent product and does exactly what I wanted it to do. I wish I had looked into this years ago, because now its so quick and easy to switch between operating systems and set up test environments.