Harddisk missing 70 gigs

We built a computer for a friend, and got a single SAMSUNG SpinPoint P Series SP2014N 200GB 7200 RPM IDE Ultra ATA133 Hard Drive. When loading the bios, we can see the harddisk on drive 0 master, as 200 gigs, but in windows, my friend told me that they can only work with 130 something gigs.

I didnot take a look at the problem, but i am guessing my friend would probably figure it out if he only partioned 130 gigs of the harddisk, and did not format the other 70. But when we installed the windows, there was only 130 gigs that we could work with, and install partitions to. Is there like a compability thing with windows, do we have to installsome kind of a driver or something, or do you think it is something else?

I was lazy enough not to google it, my friend said he did but couldn't come up with anything. So before i visit him next weekend, i said to myself, these forum people are smart and experienced, and i don't want to waste hours to figure out whats wrong with the harddisk, so i can just ask them

If you have any questions about the computer and what not, dont hesitate to ask. I did not post the other computer components, because i dont think it is a hardware incompatibility, i think it is a problem wth Windows. But again as i said, im not sure since i did not take a look, i am not sure whats wrong, but i now that during installation, there were only 130 gigs to work with.

Help is appreciated.

It's the 32 bit limit. Service pack 2 expands windows to a 48 bit address maximum.

If you use a separate partition, you can store all your irreplaceable stuff on it, and if you bork your "c" drive, it'll still be there.

If you don't want to do that, get service pack 2, and then use Partition Magic to expand the "c" drive to the full 200gig.

And it makes it safe. I have never once borked my system with Partition Magic. I haven't tried the XP system tools way, but I'm not sure I want to. When you get down to it, it's still Windows isn't it? So it'd be as reliable as Windows?