master boot record


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master boot record

The first sector on the hard disk, which contains a tiny program and the disk's partition table. When the program is executed, it determines which partition contains the active operating system and branches to the boot program in that partition's boot sector to load it. See boot sector.
References in periodicals archive ?
The master boot record (MBR) consists of executable code that's stored in the first sector (sector 0) of a hard disk drive and launches the operating system's boot loader.
A successful Seftad attack can encrypt not only the user's photos and video but also the master boot record (MBR).
and South Korean military systems, identify and remove confidential files, and, when necessary, destroy the compromised systems through a master boot record (MBR) attack.
The 'Shamoon' malware set about wiping parts of the master boot record (MBR) on the hard drive of any Windows system it could reach -- a technique designed to cause chaos on target networks.
"It is a destructive malware that corrupts files on a compromised computer and overwrites the MBR (Master Boot Record) in an effort to render a computer unusable," Symantec says in a blog posting about the virus, which it called W32.Disttrack.
<p>The infiltration does not posses a degree of sophistication that would encrypt the data on the disk, instead it was designed to corrupt the MBR (Master Boot Record) of physical disk drives.
Some 5,000 users, mostly in Europe, have reportedly been affected by the malicious program, which is a rootkit and tries to overwrite the Master Boot Record (MBR) of the computer, during the last month.
On that day, the virus would overwrite the hard disk or change the master boot record of infected hosts.
* Encrypting the master boot record can make coexisting with backup-and-recovery programs difficult.
By operating on the disk sector level, the program backs up everything-system files, master boot record (MBA), partition tables and all user data-with no regard to their content or structure.

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