How would I be able to access my UEFI settings on my Toshiba computer after I install Ubuntu? It used to have Windows 10, and I used to be able to do Shift+Restart when I still had it. Would I just have to mash the button that opens UEFI as soon as the computer turns on, or is there some kind of boot-up manager that lets me get in?
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I don't know what keys Toshiba uses to access the firmware setup utility, if that's what you're asking. Installing Ubuntu should not change this detail, but I've seen enough reports from people who say it does to be pretty sure that some EFIs are buggy and change this detail after installing Ubuntu. If you think this is happening to you, you might want to post on a Toshiba forum. Somebody here might know what's happening to you, but brand-specific questions are sometimes best answered on brand-specific forums.
That said, there are OS- and bootloader-specific ways to enter the firmware setup utility. In Ubuntu, on an EFI-based computer, the following command will usually do the trick:
sudo systemctl reboot --firmware
This command doesn't always work -- it relies on EFI features that didn't become common until a few years ago.
Some boot managers also provide a way to enter the firmware setup utility. GRUB provides this functionality, but it's not always available in the default menu. (I don't think Ubuntu activates it by default, but you may be able to activate it with the help of GRUB Customizer or by manually editing grub.cfg. I can't say how to do it with more specificity than that, though.) My own rEFInd boot manager also provides this functionality, in the form of a second-row icon of a computer chip. In the case of rEFInd, this icon appears on the menu by default, but only if the firmware supports the necessary function.
Rod Smith
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