Which CentOS iso did you download? There's a few of them and at least one won't work with what you're trying to do. I know the Minimal iso will work.
The DVD iso.
© Linux Academy. All rights reserved.
Pinehead® and the Linux Academy logo® is the registered trademark of Linux Academy in the U.S. and other countries.
Linux® is the registered trademark of Linus Torvalds in the U.S. and other countries.