I have not tried to boot from the USB attached DVD drive as yet, but people may be interested in the settings in the UEFI BIOS under “Boot”
In Windows you may wonder how to look at the UEFI BIOS, this appears to be unlike previous BIOS i.e. prior to UEFI where only in rare cases was the BIOS accessible from within Windows, “normally” you had to power off/on and hit a key, then alter BIOS, then save then boot into your o/s.
Typing “UEFI” at the Windows 10 (w10) start menu gets "Change advanced start-up options.
Options “Reset this PC” and “Advanced start-up” selecting the second…gets the same screen as holding Shift and hitting restart on a login screen.
so
Troubleshoot/Advanced Options/UEFI Firmware settings
This could be very handy is accessible remotely, although a restart is necessary so maybe not (BIG pity)
Now here is where it gets weird
Previously (to running access to UEFI) under “EFI Boot Order” I had three entries
XX
A. SSD
B. Framework HDMI Expansion Card
C. Hitachi-LG data storage Inc portable super multi
Now after all I have done is accessed the UEFI BIOS again, I only have TWO entries…
YY
A. SSD
B. Framework HDMI Expansion Card
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More oddities now
Scroll down to “EFI Boot Order” and hit return
In case XX I had TWO entries
SSD
Asus DVD
(happy but only for a moment
Now in case YY
I have ONE entry
SSD
So just by a second access to UEFI via Windows I have lost the entry for the external USB attached DVD drive.
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There is only one other entry which may have some relevance in the UEFI “Boot” screen…
“New Boot Device Priority” (by default set to “Auto” ) = The order of the EFI boot list can be modified when the boot option is not in auto.
Doh…
The options now are First, Last, Auto
As I now have only ONE boot(able) device listed First and Last or of academic interest only
Ah of some interest, you will see (that you DON’T see) and selection options like “Hit F99” for BIOS etc. when the Framework starts.
Selecting the slow (not fast) boot option and increasing the delay from 0 to ten seconds allows you to see the various options when the PC starts. OK slows the incredibly fast boot, but at least (in tiny type) you see some info.
(Wonder if the “fast” boot stops WoL as it did on older BIOS PCs?)
Regards…