Windows Vista Check Mbr

This article is about a PC-specific type of on partitioned media. For the first sector on non-partitioned media, see. A master boot record ( MBR) is a special type of at the very beginning of computer like or intended for use with systems and beyond. The concept of MBRs was publicly introduced in 1983 with. The MBR holds the information on how the logical partitions, containing, are organized on that medium. The MBR also contains executable code to function as a loader for the installed operating system—usually by passing control over to the loader's, or in conjunction with each partition's (VBR). This MBR code is usually referred to as a.

The organization of the partition table in the MBR limits the maximum addressable storage space of a disk to 2 (2 32 × 512 bytes). Approaches to slightly raise this limit assuming 33-bit arithmetics or 4096-byte sectors are not officially supported, as they fatally break compatibility with existing boot loaders and most MBR-compliant operating systems and system tools, and can cause serious data corruption when used outside of narrowly controlled system environments. Sacred Underworld Full Version. Therefore, the MBR-based partitioning scheme is in the process of being superseded by the (GPT) scheme in new computers. A GPT can coexist with an MBR in order to provide some limited form of backward compatibility for older systems.