3 votes
Accepted

How does UEFI know which bootloader configuration to use

UEFI is system firmware and GRUB is a bootloader built to conform to the firmware. GRUB with BIOS takes the form of boot code inside the MBR and before the first partition. With UEFI, GRUB can take ...
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  • 407k
2 votes

How to disable secure boot without entering UEFI?

The OS cannot just disable Secure Boot on its own – that would defeat some of the purposes of Secure Boot (e.g. preventing rootkits from installing themselves into the boot chain). If I remember ...
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  • 376k
1 vote

Is BIOS a first-stage boot loader?

The MBR simply provides a means for an already executing system (via BIOS) to continue executing. The very first stages of computer booting executes code from ROM, i.e. the code stored in the BIOS. ...
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  • 84.3k
1 vote
Accepted

Is BIOS a first-stage boot loader?

Keep in mind - I don't think there's a real standard for "Bootloader stages" so a system designer (or anyone) can call any step their platform takes to initialize anything they want without ...
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  • 70.9k
1 vote

How to disable secure boot without entering UEFI?

You need to go into BIOS (UEFI) to change (disable / enable) Secure Boot. To do that every time you wish to change OS is a bit onerous. Somehow you will need to get the password to do this. I suggest ...
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  • 36.4k
1 vote

triple boot 2x Windows10 + Linux with EFI - using grub or Windows Bootmanager

rEFInd I have a MacBook, with triple efi boot, lnx, win, osx Monterrey and with full disk encryption, possibility to boot boot older bios USB disks also with disk encryption.... Note: turn off all efi ...
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  • 11

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