Request for explanation of error message

[Rashkae]

On 2019-07-30 10:52 a.m., Liam Proven wrote:
> On Tue, 30 Jul 2019 at 16:12, Bret Busby <bret.busby at gmail.com> wrote:
> 
>> I have not been able to find a way to manually invoke
>> memtest86+.
> 
> Boot from any Ubuntu install medium. It's on the boot menu. DVD, CD,
> USB, doesn't matter. Does not affect the installed system in any way.
> 


If your computer is UEFI, you have to enable Legacy Boot, either as an
on-the fly boot option, or maybe in your BIOS.

The open Source Memtest86+ can not be run from an EFI Boot and is not
presented as an option.