This may be very simple, but I want to run it by the experts before I delve in.

The setup is I have a working WinXP computer (using it now) and it has a second hard drive inside it set to slave. I plugged it in because the old computer was fried, but the HDD is still good apparently.

So now, I basically want to use the second HDD as pure storage. What should I know/do beforehand before I format the HDD? I'm only trying to format the ADDED hard drive as well, I want the main one to stay the same as it is.

Also, should I format in safe mode or anything special?