Howto grub2 » Historie » Version 3
Jeremias Keihsler, 12.10.2023 07:23
| 1 | 1 | Jeremias Keihsler | h1. GRUB 2 |
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| 3 | h2. Recreate Grub-Menu |
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| 5 | for BIOS-systems |
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| 7 | <pre><code class="bash"> |
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| 8 | grub2-mkconfig -o /boot/grub2/grub.cfg |
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| 9 | </code></pre> |
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| 10 | |||
| 11 | on EFI-systems |
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| 13 | <pre><code class="bash"> |
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| 14 | grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg |
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| 15 | </code></pre> |
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| 17 | 3 | Jeremias Keihsler | or if you are using @Rocky Linux@ |
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| 19 | <pre><code class="bash"> |
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| 20 | grub2-mkconfig -o /boot/efi/EFI/rocky/grub.cfg |
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| 21 | </code></pre> |
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| 22 | |||
| 23 | 2 | Jeremias Keihsler | h2. remember last choice on reboot |
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| 25 | taken from: https://nocache.org/p/make-grub-grub2-remember-last-choice-on-linux |
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| 26 | |||
| 27 | <pre><code class="bash"> |
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| 28 | cp /etc/default/grub /etc/default/grub.bak |
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| 29 | vim /etc/default/grub |
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| 30 | </code></pre> |
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| 31 | |||
| 32 | add or edit the parameters @GRUB_DEFAULT@ and @GRUB_SAVEDEFAULT@ |
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| 33 | |||
| 34 | <pre><code class="ini"> |
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| 35 | GRUB_DEFAULT=saved |
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| 36 | GRUB_SAVEDEFAULT=true |
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| 37 | </code></pre> |
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| 38 | |||
| 39 | generate GRUB configuration |
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| 40 | |||
| 41 | <pre><code class="bash"> |
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| 42 | grub2-mkconfig -o /boot/grub2/grub.cfg |
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| 43 | </code></pre> |
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| 44 | 1 | Jeremias Keihsler | |
| 45 | h2. make detailed boot-information visible |
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| 46 | |||
| 47 | while it's possible to edit '/boot/grub2/grub.cfg' and also '/etc/default/grub' the better approach is to: |
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| 48 | <pre><code class="bash"> |
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| 49 | plymouth-set-default-theme details |
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| 50 | dracut -f |
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| 51 | </code></pre> |