CareerCup

while (have unbooted feet)
{
Wear sock.
Slide in unbooted foot.
Tie laces.
}

Seriously though. Why not just lookup on the web?

???????
can some1 give an explanation or a link for the above.

BIOS is given the control.
BIOS loads the first 512 bytes of the Hard disk in memory location 0x7c00. This is nothing but the boot loader located in the MBR.
BIOS passes CPU control to this location and execution begins. This bootloader loads the appropriate kernel image in memory and puts CPU in protected mode from real mode.

http://www.pcguide.com/ref/mbsys/bios/bootSequence-c.html

short address = 0x7c00;
//user two bytes;
short *pointer = (short*)address;
short data = *pointer;