I just completed a clean install of Windows XP Home on a Dell Inspiron 2500.

I began by installing the original system from the Dell OEM Reinstallation
CD. I rebooted once, and installed SP2 from the Microsoft disk. The first
reboot after installing SP2 hung with a black screen I let it sit for over
an hour. Briefly pressing the power button had no effect, so I forced the
power off by holding down the button. The next startup worked normally, and
the system seems fine.

I'm curious about what happened and if the installation is correct.