Re: memtest86+ seems to do nothing.

[Samuel Sieb]

On 3/16/23 09:22, Jeffrey Walton wrote:
> That's interesting. Is the presence (or absence) of /sys/firmware/uefi
> related to 'UEFI is supported' from dmidecode?
>  $ sudo dmidecode | grep -i -E 'uefi|bios'
>  Getting SMBIOS data from sysfs.
>  SMBIOS 3.1.0 present.
>  BIOS Information
>              BIOS is upgradeable
>              BIOS shadowing is allowed
>              BIOS boot specification is supported
>              UEFI is supported
>      BIOS Revision: 1.1
>
> That is, is it possible UEFI is supported, but UEFI is not used? Is
> that even possible?

That is possible.  Most UEFI capable systems will let you boot in 
"legacy" mode.