https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Mon, 25 May 2026 08:58:34 +0000 Sun, 04 Jan 2026 23:43:30 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=113426 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=113426&PID=200732&title=b860-proa-wifi-boot-drive-issue#200732 Author: Xaltar
Subject: 113426
Posted: 04 Jan 2026 at 11:43pm

Check your CSM and boot settings in your BIOS. If the drive was set up with CSM
and legacy boot enabled it will not be detected as a valid boot device with it
disabled. The same applies the other way around too. Looking at the manual for
your board's BIOS I couldn't find the CSM settings (usually under the boot menu).

If the drive is set up as a UEFI (GPT) drive it requires CSM be disabled
If it is set up as MBR (legacy mode) then it requires CSM be enabled

All I could find in your manual was the secure boot option, CSM may be enabled
and disabled when changing this setting, I don't know for sure as I don't own
your board. Try enabling it/disabling it and see if it gives your drive as a boot
option afterwards.

Failing that, see if you can see your drive if you hit the "F11" key during
POST (when the ASRock logo shows). This will pull up the boot selection menu.

I hope this makes sense, good luck.]]> Sun, 04 Jan 2026 23:43:30 +0000 https://forum.asrock.com/forum_posts.asp?TID=113426&PID=200732&title=b860-proa-wifi-boot-drive-issue#200732 https://forum.asrock.com/forum_posts.asp?TID=113426&PID=200730&title=b860-proa-wifi-boot-drive-issue#200730 Author: Shadow1234
Subject: 113426
Posted: 04 Jan 2026 at 11:12pm

I completely upgraded a system (new system below) and when I wanted to boot Windows from the Samsung 860 EVO 1TB SSD, which was in my old system, the SATA SSD was recognized in the BIOS, but I couldn't select it as a BOOT option. Any tips/BIOS settings on how to fix this please?   thx      
The BIOS is on Version 1.27(Newest to this day)   
(Motherbord: ASRock B860 Pro-A WiFi / CPU: Intel Core Ultra 5 245K / SSD: Samsung 860 EVO 1TB SSD)]]> Sun, 04 Jan 2026 23:12:56 +0000 https://forum.asrock.com/forum_posts.asp?TID=113426&PID=200730&title=b860-proa-wifi-boot-drive-issue#200730