On 25.11.25 02:21, dvalin@??? wrote:

{snip}

> Despite some blinking of the USB stick's LED, there was no boot - instead a return to the BIOS.

> In an effort to effect a legacy boot, I've tried in the "Security" ->"Secure Boot" menu to switch to:

>

> "Secure Boot"          [Disabled]

>

> thinking that might be needed to kill the UEFI gumpf. But I'm still stuck in the BIOS loop - no boot. It does display "Not Active" with either setting, so it doesn't look like the problem.

Well, since that (and more) didn't work, I changed back to most of the default UEFI BIOS config, the whacked F7 during a power cycle, to invoke the one-time boot selection menu. As opposed to the single option of "Enter Setup" provided in Legacy mode, there were around 4 options. Choosing the second one, immediately below the Windows default, rewarded me with the Excalibur install splash. Eureka!

On the adjacent NUC & monitor I'm now logged into Devuan Excalibur, so all is well with the world for tonight. Installing useful stuff not on the iso can wait till the morrow.

It seems that, at least with: "Secure Boot"          [Disabled]

other UEFI BIOS settings do not impede a legacy boot - in fact setting

Legacy mode mucks it up. Go figure.

Who said the journey is as important as the destination?

Having arrived, I can forget all about this stuff for another good part of a decade.

Erik