Adding a 2nd Hard Drive

I am working on my boys computer they have a 2.1 gig hard drive and have just ran out of room. I have several extra 2.1 gig hard drives from previous replacements and would like to add a 2nd one to there computer. I have never used to hard drives.

Is it as simple as just installing hooking up the ribbon cable. (which is also attached to the primary) the current hard drive letter is c: will it add the d: automaticly and can I just format the d: without erasing the software on the C drive

I know this sounds like a dumb question but I have worked on computers and made very bad mistakes (LOL)

Thanks for you advice
Steve

 

Yes, its straightforward, you will have to ensure that the jumpers on the 2nd HDD are set to Slave, then just hook it up as you described, ribbon cable and power. It should come up as D: and can be formatted or partitioned without affecting C:

 

to avoid erasing info on your c: by mistake, I would disconnect the c: first, connect the new HD and fdisk and format it.
That would leave no room for error.