The glossary below contains many of the terms you will find in common use throughout the Symantec Security Response website. Please refer to this list to find definitions of terms and answers to other Internet security-related questions.

Master Boot Record MBR

The Master Boot Record is contained in the first sector of the hard drive. It identifies where the active partition is, and then starts the boot program for the boot sector of that partition. The boot sector identifies where the operating system is located and enables the boot information to be loaded into the computer's main storage or RAM. The Master Boot Record includes a table that locates each partition that is present on the hard drive.