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Master Boot Record – Importance of protecting against malware

The MBR area can be altered by malware so that Windows systems cannot boot properly. It is important to keep this area protected and clean as noted below:

Master Boot Record – Importance of protecting against malware

QUOTE: It is that time of the year again to start anew. In terms of personal computers, the act of restarting the machine is called a reboot – an action that triggers execution of code from a special part of the disk called the Master Boot Record (a.k.a. MBR). As the year 2010 ended, I looked at some of the threats targeting the MBR.   The MBR, the most important data structure on the disk, is created when the disk is partitioned. The MBR contains a small amount of executable code called the master boot code, the disk signature, and the partition table for the disk.

The master boot code performs the following activities:

1. Scans the partition table for the active partition.
2. Finds the starting sector of the active partition.
3. Loads a copy of the boot sector from the active partition into memory.
4. Transfers control to the executable code in the boot sector.”


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