Another question I have seen being asked a lot is regarding hard disks with capacities in excess of 137Gb.  Basically to use a hard disk with a capacity greater than 137Gb you need to have Service Pack 1 installed for Windows XP and Service Pack 2 installed for Windows 2000.

Once you have installed the latest service pack, Windows will detect the size of your hard disk correctly.  The problem occurs however if you are installing Windows XP on a computer with a hard disk bigger than 137Gb.  If you have an old Windows XP install CD, which doesn't have Service Pack 1 on it, then the Windows Setup will only detect your hard disk as being 137Gb.  If this happens, there are two things you can do.

You can either install windows anyway, then install Service Pack 1 to enable Windows to detect the rest of your hard disk space, and then finally partition and format the rest of your hard disk.  This will make your computer look as if you have two hard disks in it.  For example, with a computer with a 250Gb hard disk and one CD-Rom drive, you will have a Drive C in "My computer" with a 137Gb capacity and a Drive D as your CD-Rom drive and a Drive D with a 113Gb capacity which is the space left over from your 137Gb drive C (250Gb - 137Gb).  If you decide to use this method, once you've installed Service Pack 1 you need to partition and format your hard disk.  You can do this easily by doing the following;

1. Click "Start", then "Control Panel".  (Or you might have to click "Start", then "Settings", then "Control Panel".
2. Double click "Administrative tools".
3. Double click "Computer management".
4. Click "Disk Management".
5. You can then follow the steps in the wizard to configure the rest of the space on your hard disk drive.

If however, you would rather have a 250Gb Drive C for example as opposed to two drives, then you need to make a slipstreamed Windows XP CD.  This uses a CD-Writer to make a new Windows XP CD with Service Pack 1 on it.  I have made one myself and it worked well.  It is a little more difficult than the previous method but can be done by following the instructions on here.