This is of course not my work, and I'm only adding it here because the links to the file and source patch in the blog are dead. I add here a modified grub binary, the patch to create it, and the full blog page of the blog with the instructions.
This tool and procedure was tested on a HP Envy 15 ah150sa, and it has quite a bit of interesting stuff hidden in there. It is suitable for systems that have signed images, which will refuse to boot a modded BIOS where they are shown again.Ĭredit for the idea goes to Falseclock user in this forum (I took it from there, anyway) This system allows to modify board settings otherwise kept hidden in vendor BIOS interfaces. Select Yes and press Enter.Įven though we have unset the supervisor password, secure boot will stay disabled.Tools needed to access advanced settings that are otherwise not shown in the firmware's GUI. Now go to Exit, select Exit Saving Changes and press return. Important: If Supervisor password is does not read Clear, repeat the last step to ensure there is no supervisor password set. This means that we un-set our supervisor password. In the Enter new password and Confirm New Password fields, DO NOT ENTER ANY PASSWORD! Just press return two times.ĭouble-check that Supervisor password is now read Clear. Go to the Security tab again, go to Set Supervisor Password and press return.Įnter the password you used before (e.g. Now we will unset the supervisor password. Now go to the Boot tab where you can now disable Secure Boot. On the top of the page, Supervisor password is should now read Set. If you forget your supervisor password you WILL BRICK YOUR MACHINE! This password will only be used temporarily so you DO NOT want to use a secure password!Įnter the password, press return, enter the password again and press return again. Important: DO NOT use a hard-to-remember password here! I recommend using abc123 as a password and writing it down just in case.
This will show a prompt to set a supervisor password.
Go to the Security page and navigate to Set Supervisor Password. In order to change it you need to temporarily set a supervisor password in the BIOS. When accessing the BIOS/UEFI by pressing the F2 key during boot, the Secure Boot option is and greyed out so I couldn’t change it. On my Acer Aspire A515-52-51EL Secure Boot is enabled by default.
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