Fix MBR in Windows XP and Vista By Yourself

What is the MBR?

fix mbr A master boot record (MBR), or partition sector, is the 512-byte boot sector that is the first sector ("LBA Sector 0") of a partitioned data storage device such as a hard disk. (The boot sector of a non-partitioned device is a Volume Boot Record. These are usually different, although it is possible to create a record that acts as both; it is called a multi boot record.) The MBR may be used for one or more of the following:

  • Holding a disk’s primary partition table
  • Bootstrapping operating systems, after the computer’s BIOS passes execution to machine code instructions contained within the MBR
  • Uniquely identifying individual disk media, with a 32-bit