https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Wed, 17 Jun 2026 01:51:01 +0000 Fri, 05 Feb 2021 03:20:53 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=18007 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=18007&PID=83718&title=cannot-boot-memtest86#83718 Author: oldrock
Subject: 18007
Posted: 05 Feb 2021 at 3:20am

I found the trick is to select "UEFI: sandisk" from the boot menu. I was able to boot memtest86 once using this. However, the boot menu items changes frequently. It always shows a list of hard drives, followed by:

USB: sandisk (may appear 0 or 1 time)
UEFI: sandisk (may appear 0, 1 or 3 times)

Obviously if the UEFI entry doesn't show up I cannot select it to boot. So what causes these choices to sometimes show up and sometimes not show up?]]> Fri, 05 Feb 2021 03:20:53 +0000 https://forum.asrock.com/forum_posts.asp?TID=18007&PID=83718&title=cannot-boot-memtest86#83718 https://forum.asrock.com/forum_posts.asp?TID=18007&PID=83686&title=cannot-boot-memtest86#83686 Author: oldrock
Subject: 18007
Posted: 04 Feb 2021 at 9:22am

I can boot up windows 10 install from an USB drive by selecting "USB sandisk" in the boot menu.

I then replace the windows 10 usb drive with a memtest86 usb drive and try to boot the same way. I ended up booting windows 10 from a hard drive.

I read I need to enable UEFI. But if it boots up windows 10 install disk, doesn't that mean UEFI is enabled?

My mobo is asrock z97 killer LGA 1150. Would it work?]]> Thu, 04 Feb 2021 09:22:54 +0000 https://forum.asrock.com/forum_posts.asp?TID=18007&PID=83686&title=cannot-boot-memtest86#83686