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On , James wrote: |
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> Howdy, |
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> |
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> So I have these entries in my /etc/default/grub file: |
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> |
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> GRUB_DISTRIBUTOR="Gentoo" |
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> GRUB_DEFAULT=kernel-3.13.6-gentoo |
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I don't think this will work -- it is the title of menu entry you need |
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not the kernel executable |
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|
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> GRUB_HIDDEN_TIMEOUT=3 |
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> GRUB_TIMEOUT=10 |
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> GRUB_GFXMODE=1024x768 |
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> |
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> I ran 'grub2-mkconfig -o /boot/grub/grub.cfg' |
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> after the last ebuild of 3.13.6-gentoo |
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> |
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> |
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> /boot shows: |
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> kernel-3.13.0-gentoo |
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> kernel-3.13.0-gentoo-r1 |
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> kernel-3.13.1-gentoo |
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> kernel-3.13.6-gentoo |
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> kernel-3.13.6B-gentoo |
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> kernel-3.13.7-gentoo |
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> |
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> |
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> Obviously, I like to kept kernel experiments around a while.... |
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> |
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> So when I get the Grub2 (ascii) boot menu and just select the |
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> default, it boots kernel-3.13.7-gentoo, despite |
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> 'kernel-3.13.6-gentoo' being set in as the default for Grub2? |
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> |
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|
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Grub2 seems to do things a little differently. |
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I've been working through my list especially for headless and failed |
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boots. |
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you want in /etc/default/grub |
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GRUB_DEFAULT=saved |
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GRUB_SAVEDEFAULT=true |
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|
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just an aside if you are going headless you want GRUB_SAVEDEFAULT=false |
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especially for a fallback boot option. if you don't want the selection |
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just booted to become the default, you set this to false. |
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|
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once you have that you can then |
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# grub2-set-default 'Gentoo GNU/Linux, with Linux x86_64-3.13.6-gentoo' |
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|
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it would be nice if there was a way of getting id menu numbers. |
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i've not looked into the grub2-mkconfig but i get a menu with a single |
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default option and advanced options wiht previous kernels listed in |
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there. |
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id numbers would not work too well with sub menus, but i recently had a |
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message from grub saying that because my default option had been moved |
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to the advanced option it should be amended to be |
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# grub2-set-default |
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'gnulinux-x86_64-3.12.13-gentoo-advanced-a48a107b-c379-4c72-bcda-25011968eab5' |
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also for booting an option once, on the next reboot you can use |
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# grub2-reboot 'GNU/Linux, with Linux x86_64-6.13.6-gentoo' |
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|
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afaik if your kernel/initramfs use custom names e.g. PeterRabbit-vmlinuz |
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with PoohBear-initramfs grub2-mkconfig doesn't work for you, so make |
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sure your files conform. |
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> Comment thoughts and suggestions, including deeper reading on grub2 |
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> is most welcome, particulary Grub2 examples. |
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> |
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> Also, is there a nice 'gui' boot-menu for grub2 ? |
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> |
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> It seems to take several repeated attemps for grub2 to correctly |
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> use the kernel I desire, despite what syntax/order I use. |
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> If I boot a kernel that is not the default, it takes about 2 minutes, |
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> then another 2 minutes of blank screen then it boot fairly quickly. |
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> The mobo is a GA-99FXA-UD3 and this might not have the bios/uefi/??? |
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> optimally configured? (first gigabyte moble). |
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> |
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> The is what I have read on grub2 (man pages, gentoo wiki) so additional |
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> reading, with some useful examples would also be much appreciated. |
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