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Disabling CSM and enabling secure boot makes my Boot drive disappear.

Anonymous
2021-12-07T04:49:08+00:00

Windows 11 upgrade requires I enable secure boot on my PC, it's main use is as a home Plex Server, It has an Intel 8700k and I just use the integrated graphics UHD 630, I don't need a discreet gpu for this. I believe W11 supports this.

In the BIOS (gigabyte z370 motherboard) the Storage Boot Option & Other PCI Devices are set to UEFI mode.

To enable 'Secure Boot' I have to disable CSM support, which I do and enable secure boot but when my PC reboots it goes back to set up and there is no boot drives listed, I have to return the bios back to the original for my drives to show up, the Boot drive is a nvme Samsung 980 pro.

Can anyone tell me what I am doing wrong?

Thx.

Windows for home | Windows 10 | Install and upgrade

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  1. Anonymous
    2021-12-07T05:00:33+00:00

    Are your drives set to GPT partition type?

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  1. Anonymous
    2021-12-07T06:35:09+00:00

    So it's been fixed! yeh.

    Joe13 sent me on the right path. I did a bit of reading and all I had to do was convert the boot drive to GPT by using the command prompts mbr2gpt which worked flawlessly then was able to change the settings in the bios, happy days.

    again thanks for the replies.

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  2. Anonymous
    2021-12-07T07:07:35+00:00

    Glad to have helped, and sorry for the late reply, I'm in a 4 hour class! 😂

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  3. Anonymous
    2021-12-07T05:49:29+00:00

    Thanks for the reply

    The boot drive is MBR, and is a Samsung 970 evo plus, not 980 as above.

    I have two other SSD's that are GPT

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  4. Anonymous
    2021-12-07T05:51:54+00:00

    Hi Dav,

    I am Sumit here to assist you with this question.

    Usually a BIOS update would resolve this.

    Right-click Start>Run.

    Type in msinfo32 and press enter.

    Take a screenshot of the System Summary window and post it in the next reply.

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