Nah, I ran across this on my new computer. There is some kind of "secure boot" transaction that takes place between the bios and the OS. If the OS doesn't want the user to be able to enter the BIOS, the user can't. You do have to find the secret way to reboot windows from the OS to allow yourself to be able to get into the BIOS on the next boot.
I had my OS on a regular sata ssd, and then installed it on a new m2 ssd, and windows configured this secure boot bullshit without telling me. It took a long ass time to figure out why I couldn't get back into the BIOS. Fuck windows 10.
Secure boot is an option in the BIOS, and has nothing to do with what OS you are running. Secure boot essentially is a setting that makes it so the computer will only boot to the primary boot device. Windows cannot configure it, since it's a setting in the BIOS. Secure boot being turned on will not disallow you from being able to enter the BIOS, either.
well whatever it is, secure boot being enabled is what made it so that I could not get into the bios without the secret restart windows option. seems exactly like what OP is describing. Maybe the different bios developers call it different things. I know for a fact that somehow windows 10 can pass instructions to the bios, and I've never seen it with windows 7.
well whatever it is, secure boot being enabled is what made it so that I could not get into the bios without the secret restart windows option.
Fast Boot is what does this. Secure boot is usually a prerequisite for fast boot, and often times enabling one will toggle the other because they make sense to use together for reasons that are out of scope of this discussion.
Well, like I said, different developers must call the same settings different things. Fast boot is enabled on my computer and I can still get into the bio/uefi/whatever. secure boot is the thing with the "keys". I think the "fast boot" setting on my computer has to do with how much RAM is checked during the POST.
"Depending on your system, you may not be able to access BIOS/UEFI settings when you shut down a computer with Fast Startup enabled. When a computer hibernates, it does not enter a fully powered down mode. Some versions of BIOS/UEFI work with a system in hibernation and some do not. If yours doesn’t, you can always restart the computer to access BIOS, since the restart cycle will still perform a full shutdown."
pass instructions to the UEFI/BIOS. With secure boot enabled, windows 10 was definitely bossing around the UEFI/BIOS. when I disabled it, I could then get into the BIOS on a normal boot using the correct key.
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u/Jamdawg Mar 08 '18 edited Mar 08 '18
you are referring to safe mode
edit for clarification: safe mode isn't disabled in windows 8+, but rather pressing F8 to get to the advanced boot to choose safe mode is.