How do I format a partition
 

What command do I use to format a partition? I want to eleiminate my second distro and will prob takes it's two parts out and replace with 1.

What you probably need is fdisk (or cfdisk more user-friendly version) to create and delete partitions.

To make a filesystem (can also called as formatting) in to the partition you can use the command Where XX is a letter of the disk + correct partition and type is the filesystem type (like ext2, ext3 or reiserfs).

Be aware! You can destroy all your data with any of the tools mentioned here if not properly used.

You can also use "mkfs.fstype /dev/hdXX " to format the partition. I advise you to try reiserfs, as its performance is very good.