The VBR record can contain the code for loading and invoking the operating system or other standalone programs. During booting, the Basic Input/Output System( BIOS) accesses the Volume Boot Record and processes the program code.
The Volume Boot Record contains the Disk ParameterBlock. This is a data table that contains information about the storage capacity of the disc, the number of sectors, etc. In addition, the VBR record contains the Volume Boot Code, a special program code with which the operating system can be loaded.