Hi David -
Found your answer in a matter of minutes.
Yes, you do have a hard disk boot priority sub-menu within your BIOS.
The first item in the Advanced BIOS Features menu is Hard Disk Boot
Priority. Press Enter at this menu item to bring up the sub-menu. From the
sub-menu, use the up and down arrow keys to move through the available disk
options. Use the + and - keys to move items up or down the menu list. Once
you have the menu arranged so that your hard disk is the first item listed,
press ESC to go back to the Advanced BIOS Features menu. ESC back to the
main menu and select the option to save and exit setup.
I hope this is clear. The information is covered in more detail in your
motherboard manual. If you don't have a manual, pick up the latest version
(in PDF format) at
http://www.gigabyte.com.tw.
Jef