copy from hard drive to hard drive

[kenpattx]

the shuttle is used as a back up system, if it is'nt current its of no value for that, this is why i'm trying to keep them (lap-top and shuttle) the same, I want the book id's to be the same, when they were new it was easy simplely copy from one to the other... I do have an external hard drive for the laptop which is also current..I know this is not a biggie, but for me it is..my original question was......I want to reload the shuttle hard drive..should I delete all the stuff thats there...should I format it.....is there a way to copy only the items that are not presently on it..since I' not a computer whiz I was hoping for someone click by click tell what I should do....thanks agian Ken