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Reverting 10X boot restrictions & returning to classic 10

Prerequisites

  • Windows 10 Setup USB of an identical or higher version than the 10X build you've used
    • For example if you're on 10X build 20279, you'll want Windows 10 Insider Preview build 20279 or newer
  • An x64 EFI shell (click here to download)
  • Secure Boot off on the machine you wish to roll back to classic 10

Tweak USB contents

  • Plug in the setup USB drive
  • Navigate to efi\boot inside your USB drive
  • Rename the existing bootx64.efi file to winx64.efi
  • Copy the EFI shell file you've downloaded to that directory and rename it to bootx64.efi
  • Create a file on the root of your USB drive called startup.nsh and open it in Notepad
  • Paste this text into Notepad and save the file: 
    dmpstore -d SecureBootPlatformID -guid 77FA9ABD-0359-4D32-BD60-28F4E78F784B
fs0:\efi\boot\winx64.efi
fs1:\efi\boot\winx64.efi
fs2:\efi\boot\winx64.efi
fs3:\efi\boot\winx64.efi
fs4:\efi\boot\winx64.efi
fs5:\efi\boot\winx64.efi
fs6:\efi\boot\winx64.efi
fs7:\efi\boot\winx64.efi
fs8:\efi\boot\winx64.efi
fs9:\efi\boot\winx64.efi
fsA:\efi\boot\winx64.efi
  • The USB drive is now ready to use

Extra troubleshooting

Recent devices with Intel Pentium (Gold) chips that use Insyde BIOS are prone to entering a faulty Secure Boot state, resulting in the machine booting to a black screen with Security Boot Fail written in the middle, even though UEFI says Secure Boot is off. To fix this issue, do the following:

  • Turn Secure Boot on
  • Save changes and boot to UEFI settings again
  • Turn Secure Boot off
  • Secure Boot should now be fully disabled again
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