add option to preserve NVRAM boot order #38
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efibootmgrhas two options:-cand-C. The latter allows to add a new entry but keep the boot order intact.I'm using kernelstub in a dual-boot scenario, and also use
systemd-bootas a bootloader.I want to keep the
systemd-bootentry - the default, but I want kernelstub to update the NVRAM entry whenever the kernel upgrades, so that I can use the direct NVRAM entry as a fallback if needed.Currently,
kernelstubuses-coption only, which brings the newly added entry to front of the boot order, which requires me to reset boot order manually each time the kernel upgrades.This pull request is a sketch of what I think of, I'm open to suggestions, comments, improvements :)