F5F Stay Refreshed Hardware Desktop M2 formatted with Windows, not appearing as a bootable device from Windows.

M2 formatted with Windows, not appearing as a bootable device from Windows.

M2 formatted with Windows, not appearing as a bootable device from Windows.

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wahleno
Member
243
09-22-2021, 05:23 PM
#1
I made a copy of my Windows to a M.2 SSD from an SATA drive, and I was able to boot normally. After enabling Secure Boot for Windows 11, CSM support was turned off, which prevented my drives from appearing in the bootable options. I tried reactivating CSM but it would shut off after saving, making it impossible to return to Secure Boot. Could you offer any suggestions on resolving this issue? Thank you!
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wahleno
09-22-2021, 05:23 PM #1

I made a copy of my Windows to a M.2 SSD from an SATA drive, and I was able to boot normally. After enabling Secure Boot for Windows 11, CSM support was turned off, which prevented my drives from appearing in the bootable options. I tried reactivating CSM but it would shut off after saving, making it impossible to return to Secure Boot. Could you offer any suggestions on resolving this issue? Thank you!

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mister_pokemon
Member
73
09-22-2021, 06:14 PM
#2
It appears your Windows setup uses an older BIOS version instead of UEFI. Secure Boot is only available with UEFI, so it won't function on your Legacy BIOS configuration.
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mister_pokemon
09-22-2021, 06:14 PM #2

It appears your Windows setup uses an older BIOS version instead of UEFI. Secure Boot is only available with UEFI, so it won't function on your Legacy BIOS configuration.

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DeoManchick
Member
68
09-22-2021, 10:03 PM
#3
Switch off secure boot and enable CSM to return to Windows. Run mbr2gpt to transform the disks. Keep any important data safe before proceeding with the conversion.
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DeoManchick
09-22-2021, 10:03 PM #3

Switch off secure boot and enable CSM to return to Windows. Run mbr2gpt to transform the disks. Keep any important data safe before proceeding with the conversion.