9.3 boot error

[Matthew DeFrancesco]

Hey guys,

This is my first attempt at diving into the world of FreeBSD. I completed
the 9.3 installation and after I rebooted (and taking out the bootable
media) I get an error while booting:

Non-system disk or disk error
replace and strike any key when ready

I also tried installing 10.1 on a DVD, but continued to receive a CAM
timeout error - which did not allow me to even proceed to the installation.

Any help would be greatly appreciated!
Thanks,
Matt