Fdisk
Use FDISK with the following switches
/PRI: - Command line to create a PRI- DOS partition on hard drive.
/EXT: - Command line to create an extended DOS partition on hard drive.
/LOG: - Command line to create a logical drive.
/PARTN - Saves the partition to a file called PARTSAV.FIL
/Q - Quiet. Performs FDISK without prompting.
/STATUS - Shows you the current status of your hard drives.
/MBR - Clears Master Boot Record.
/X - Ignores extended disk access support.
Use when you have "Disk Access" or "Stack Overflow" messages.