memtest86 on X10SL7-F - UEFI or not?

[Kevin Horton]

I'm doing RAM testing on my newly built FreeNAS box, and have a question.

The motherboard is a SuperMicro X10SL7-F with a G3258 CPU. I'm using the free version of memtest86 on a USB stick in one of the back panel USB ports. Initially, when I booted, I would get memtest86 v4.3.7, which is the fall back version if UEFI is not available. I booted several times, and always got v4.3.7.

After 6 successful passes, I terminated the RAM testing to have a look at BIOS settings. I adjusted the boot order to put "Removable" in the top slot, then rebooted. This time I got memtest86 v6.2.0.

I'm baffled why UEFI was not available initially, and now it is.

 

[Ericloewe]

The BIOS has different options for legacy and EFI boot, IIRC. If it tries legacy first and is successful, it'll never see the EFI executable.

 

[Kevin Horton]

The BIOS has different options for legacy and EFI boot, IIRC. If it tries legacy first and is successful, it'll never see the EFI executable.

Thanks! I'll look for relevant options in the BIOS after I've finished testing the RAM.