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Cant boot in GPT mode

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Peecee View Drop Down
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    Posted: 15 Mar 2019 at 3:18pm
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.



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gizmic View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote gizmic Quote  Post ReplyReply Direct Link To This Post Posted: 15 Mar 2019 at 6:02pm
csm
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Peecee View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Peecee Quote  Post ReplyReply Direct Link To This Post 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?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote gizmic Quote  Post ReplyReply Direct Link To This Post Posted: 16 Mar 2019 at 10:20am
you need to disable CSM and install windows 10 for uefi mode
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wouter Bovelander Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 2019 at 1:32am
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.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote xhue Quote  Post ReplyReply Direct Link To This Post 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.
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