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I have Windows 10 installed in SSD in legacy mode (not UEFI). I have connected it to gigabyte brix. When I turn on the Brix, its does not boot from SSD. Instead it gives me UEFI shell:

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When I type exit and hit enter in above shell prompt, it seems to take me to BIOS which lists SSD is detected:

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It does not show SSD in boot order:

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I tried by turning off secure boot, but no help:

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How can I enable booting from legacy mode Windows installation in my SSD and boot Brix from it?

Update

I did not mention exact version of BRIX. Its Gigabyte BRIX GB-BLCE-4105

After going through some reviews, I found that UEFI support is hard coded in the firmware and it simply does not support leagacy OS support.

My further questions will be:

Q1. Is that even possible to hardcode UEFI support and not support legacy mode at all? (I guess yes, it all depends on how firmware is coded, but need confirmation)

Q2. Is it fixable? With say firmware updates / flashing or some other approaches?

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  • Your motherboard firmware does not support legacy booting -only UEFI. That is the norm for most new motherboard firmware nowadays. Vendors have been slowly phasing out CSM support for years.
    – fpmurphy
    Dec 5, 2020 at 5:08

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After going through some reviews, I found that UEFI support is hard coded in the firmware and it simply does not support leagacy OS support.

My further questions will be:

Q1. Is that even possible to hardcode UEFI support and not support legacy mode at all? (I guess yes, it all depends on how firmware is coded, but need confirmation)

Q2. Is it fixable? With say firmware updates / flashing or some other approaches?

Including screenshots of the reviews mentioning the same:

Review from amazon enter image description here

Reviews from newegg

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