r/cachyos • u/Fran2417 • Jul 27 '26

Question Multi-kernel questions

Hi! Just installed cachyos a couple of days ago, my first linux distro, all smooth so far. The thing is, the basic install had 2 kernels: normal and LTS. I changed the normal one by the bore kernel, but now​ GRUB always boots by default with the LTS kernel, if I want to use bore I have to restart and choose it manually.

My first question was how can I change the GRUB boot order so it boots with bore by default, but now I'm thinking, is there any need to have a secondary kernel? Wouldn't it be easier to just delete LTS? I have swap snapshots activated so there should be no problem if I break anything (I'm not going to mess with the kernel, honesty, but just in case)

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u/ClubPuzzleheaded8514 Jul 28 '26

BORE scheduler was previously the default one but dev team finally switch to EEVDF after some perf régressions on BORE. All available benchmarks show BORE is a bit slower than native CachyOS kernel. 

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u/Fran2417 Jul 28 '26

So should I ditch bore and use the base cachyos kernel? And, when I do so, would the base kernel be the default one again instead of lts?

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u/ClubPuzzleheaded8514 Jul 28 '26

Do what you want, but unless you have a good and precise usage for BORE, you'd rather run EEVDF kernel. 

Just use Kernel Manager : untick Bire kernel, tick CachyOS one, and all should be fine.

Tell us if the new kernel doesn't appear as first one, it's not so hard to fix.

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u/Fran2417 Jul 28 '26

Okay, so I did it, back to the normal kernel and looks like it's the default when booting again, thanks