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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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GRUB is confusing (lemmy.ca)

submitted 22 hours ago by kionite231@lemmy.ca to c/linux@lemmy.ml

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hello,

I don't know if this is the right place to ask this question but could someone explain me how a UEFI system boots, I couldn't find a guide online. I want to know because I don't understand certain GRUB commands and how it get installed.

I just copy paste commands from Arch wiki and it just magically works without me knowing anything about it.

all the different distros use different grub command parameter and it's so confusing. eg, Arch and Gentoo.

Arch command: grub-install --target=x86_64-efi --efi-directory=esp --bootloader-id=GRUB Gentoo command: grub-install --efi-directory=/efi

why both command is different? exactly where does grub gets installed?

sorry if this is a naive question but i really don't understnad GRUB.

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[–] 2xsaiko@discuss.tchncs.de 33 points 21 hours ago (7 children)

Since you use UEFI, you don’t have to use GRUB. It basically consists 90% of cruft left over that was needed for BIOS boot, and has a lot of moving parts and bad design (such as a single config file which has to be shared between OSes, which is so complex it needs a generator for it).

Try systemd-boot, it’s lightweight and well designed.

Anyway, looks like the target parameter is default now, the “esp” in the arch command is supposed to be substituted for the ESP path, for example /efi, so the only difference is bootloader-id. Which looks like that’s the label that show up in your UEFI setup for the boot entry.

[–] kionite231@lemmy.ca 0 points 19 hours ago (3 children)

Which bootloader would you suggest for UEFI system?

Thanks for the reply

[–] TrickDacy@lemmy.world 11 points 19 hours ago

They specifically called out a suggestion which was even formatted so you couldn't miss it even if you weren't reading closely.

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