Help with partitioning a hard drive

I plan to reformat my hard drive, and I want to partition it, but I don't know how.

Could someone please guide me with simple directions.

Thank you.

>>8 DUMBASS
WON'T WORK UNLESS YOU'RE IN AN OPERATING SYSTEM AND IT WILL NOT LET YOU GET RID OF OR RESIZE THE CURRENT BOOT OR SYSTEM PARTITIONS.