As you can see above, we've changed the boot order from Removable Devices shown in the previous step to the CD-ROM Drive as an example.
BIOS will now look for a bootable CD in the optical disc drive first, before trying to boot to any removable media like a floppy drive and also before trying to boot to the hard drive or a network resource.
Make whatever boot order changes you need and then proceed to the next step to save your settings.
