Uefi boot manager5/25/2023 On the other hand, what should be possible is to add another boot manager along with Windows', and register it within UEFI (in NVRAM storage) the steps are much the same as you wrote, just useīcdedit /create /d "LinuxLoader" list: such an entry would survive when some (ill-advised) tool would decide to restore the correct value and flatly erase the standard place with Microsoft's bootmgfw.efi. You cannot use applications of type OSLOADER to boot Linux: this kind is for Windows loaders, such application are boot applications (not the same as EFI applications), they are signed by Microsoft exclusively and launched by Windows Boot Manager (see the first slides of this UEFI document for a good description of the process.) The UEFI boot manager is a firmware policy engine that can be configured by modifying architecturally defined global NVRAM variables.
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