How do you dump everything on a computer in order to reformat it?

It depends on what you mean by 'DUMP.' If you mean to just get rid of everything, then just reformat the drive. If you mean to SAVE everything then their are many ways to do this task. The easiest way is to copy your files/important information to a) another drive, b) a CD or c) a DVD. The easiest way to copy the files to another drive is to use Norton Ghost or some other program like that (this will require another drive to be present) and it will make an exact copy of the whole disk drive. The danger here is that if you have a virus of any sort, it will be copied along with you other information.....