#1 is likely the HD but could be a flash stick if you had one plugged in at the time. I always google a string like that to find out what it is. But if those are the only listings then it would be your HD.
#2 is your DVD drive as you can tell by the string.
To choose DVD drive to boot use the one-time BIOS Boot Menu key, or set it first to boot in BIOS setup: How to Boot your Computer from a Bootable CD or DVD
Some BIOS will not show boot options unless they are plugged in or detected at the time.
If you want to reset your BIOS to defaults you would do it one of these ways: Clear CMOS - 3 Ways to Clear the CMOS - Reset BIOS