I have a DVD disk for installing Windows 7 Ultimate 4-bit version.
I put it into a Guamar External DVD Drive, which is connected to my computer via USB cable.
When I turn on my Framework laptop for the first time, it takes me to a screen with multiple options: Continue, Boot Manager, Boot From File, Administer Secure Boot, Setup Utility.
Continue pauses for a second, then gives me a black screen with the text:
No bootable device — please restart system
If I select Boot Manager it displays be a list of EFI Boot Devices
one of them is “EFI USB Device (hp DVDRAM GT80N)”
I select it.
It shows a pop up message with the text:
EFI USB Device (hp DVDRAM GT80N) boot failed.
Then it takes me back to the main menu.