Friday, February 10, 2012

Boot Loader

In order for the BIOS to load an OS it looks for instructions on the first sector of a hard drive.
On the first sector of the hard drive resides the master boot record (MBR), and is where a boot loader is initialized.
Depending on the boot loader, additional files may be stored and read from a partition on the hard drive.
After this step the boot loader begins to start the operating system, and is not used again until the next boot.

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