Asus UEFI/BIOS options - How to boot from DVD?

To get the DVD drive to show up in the boot menu, you might need to go into the BIOS (actually (U)EFI Settings) and enable Legacy (BIOS) Mode or the UEFI Compatibility Support Module (CSM) or similarly worded option:

(Screenshot of Asus Zenbook Prime UX31A-DH51 BIOS with CSM disabled.)

(Screenshot of Asus K55A BIOS with CSM enabled.)

Note: You might also have to disable both Boot / Fast Boot and Security / Secure Boot Control.

See my answer to THIS post. Try to change the UEFI boot options by "restarting" Windows8 while holding down the shift key, to enter advanced reboot menu.

The Asus VivoBook Max X541N is very hard to get to boot from USB or DVD.

I found only one way to make the system boot from a USB:

1. Use the USB2 port, not the blue USB3 port.

2. Turn off secure boot in the BIOS settings.

3. Using Rufus, write the UEFI:NTFS as the Boot Selection option.  Do not select the ISO to burn, instead choose the UEFI:NTFS from the dropdown in Rufus, and burn that by pressing "START".

   

4. Now, the USB will have two partitions; the empty bigger partition (that's actually writeable) is where you must copy the CONTENTS of the .iso file that you want to boot. (Not copying the .iso file, but copy and paste everything that is in the ISO file system onto the USB that you just wrote the UEFI:NTFS to).

5. Now when you boot, it will load the UEFI:NTFS Rufus boot loader, which will then go and load the contents of the partition where you copied the file contents of the iso to.

This was the result of much testing, DVDs, MBR and GPT USB, every single setting; nothing would boot this laptop from USB or DVD.  Only this UEFI:NTFS partition type works a charm.