Format whole Computer using Utility Disk in few steps.

Format your computer using utility disk , Most of the people need to format his/her computer for removing bad sector from computer.
Here is a simple debug code need to write to perform format.
DEBUG SCRIPT

C:\ > debug
- F  200  L1000  0 < Enter >
- A CS : 100 < Enter >
xxxx:0100  MOV AX,301 <Enter >
xxxx:0103  MOV BX,200 <Enter >
xxxx:0106  MOV CX,1 <Enter>
xxxx:0109  MOV DX,80 < Enter >   <-"80" for hd 0 ,"81" for hd 1
xxxx:010c  INT 13 < Enter >
xxxx:010E INT 20 < Enter >
xxxx:0110 < Enter >  <- leave this line blank
- G < Enter >
program terminated normally
< CTRL - ALT - Del >
partitions are now gone. Now you can proceed with F disk.