How To Clean, Format and Convert Your HDD to gpt or MBR

Okay, here's what you do if you just want to completely wipe your hard drive clean.
This will take approximately 1 hour per 320gb of hard drive space to clean your hard drive.  If you have a 1,000gb hard drive then expect this option to take over 3 hours to complete.  It's pretty much the only option if you want to reinstall an operating system.  When you initiate, "clean all" you will only see a flashing cursor and that is okay.   The command isn't set up to show a percentage completed or anything of that nature.  So, just expect the screen to stay exactly how it is with only a flashing cursor for roughly 3 hours per 1,000gb.

If you need gpt or mbr mode I will explain what to do.

• Open command prompt and type the following:
• diskpart
• list disk
• select disk (and the corresponding number to the disk you want)
• clean all (This command is the time consumer.  Remember, 1 hour per 320gb)
• convert gpt (or you can enter command) convert mbr
• create partition primary 
• format fs=ntfs label=(give your HDD a name) quick 

 Example:  format fs=ntfs label=Hard Drive quick 

• assign letter=C (you can use any letter) 

 Your good to go