Cant boot in GPT mode
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=11109
Printed Date: 18 Jul 2025 at 10:18pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Cant boot in GPT mode
Posted By: Peecee
Subject: Cant boot in GPT mode
Date Posted: 15 Mar 2019 at 3:18pm
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Hello, i have a problem with my FM2A88M-HD+ motherboard. When i use te mbr2gpt tool from Windows and convert my ssd to gpt, i cant boot to it and it says, no boot device found select proper boot device and try again. Fast boot is disabled on my mobo. The tool says i have to enable UEFI boot but i cant fond it anywhere. |
Replies:
Posted By: gizmic
Date Posted: 15 Mar 2019 at 6:02pm
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csm ------------- 
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Posted By: Peecee
Date Posted: 15 Mar 2019 at 8:08pm
| But is CSM not for mbr? In want to boot to a GPT disk, it is already mbr or can i boot in GPT if i disable it? |
Posted By: gizmic
Date Posted: 16 Mar 2019 at 10:20am
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you need to disable CSM and install windows 10 for uefi mode -------------
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Posted By: Wouter Bovelander
Date Posted: 17 Mar 2019 at 1:32am
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A boot profile in the UEFI must be created from Windows. At least that how it's worked for me. Search online for bcdboot and you'll find the instructions. In short, you boot your system from a USB stick with Windows installation media on it. Go to the repair tools and run a command prompt. From there you mount the EFI partition on the disk you want to boot from. Use diskpart for that. Then you run bcdboot c:\Windows and the boot profile is created in your UEFI and you should be able to boot from your drive like normal. Again, for full instruction search for bcdboot instructions. |
Posted By: xhue
Date Posted: 17 Mar 2019 at 1:40am
| Disable CSM, enables SecureBoot and re-install Win. Saves you tons of trouble in on the long run. |