Have a Dell Dimension 8300 desktop. Just installed a Western Digital 160
gig hard drive without any problems. An issue is that the set up shows
the drive as 160 gig. However in Windows it shows it as a 126 gig.
What's with that?

After I installed it I went to "Control Panel", "Administrative Tools",
"Computer Management", "Disk Management". There it showed the drive as
126 gig. Of course I had to format it so I did.

So why is it shown as 126 and not 160?