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az20110303
n00b
Joined: 21 Mar 2011
Posts: 30
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 Posted: Tue May 17, 2011 2:51 pm Post subject: troubles with kernel |
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Hello everyone  . So i decided to migrate to gentoo from ubuntu. i did some efforts before, but they all were half successfull.
i am installing gentoo on one physical drive with ubuntu. i compiled kernel 2.6.37-gentoo-r4 using configs from kernel-seeds.org. It seems i did not miss anything in config file, i checked it twice.
After kernel is compiled i
in ubuntu and gentoo entry appears in grub.cfg
here how it looks:
| Code: | menuentry "Gentoo Base System release 1.12.14 (on /dev/sda5)" --class gnu-linux --class gnu --class os {
insmod part_gpt
insmod ext2
set root='(/dev/sda,gpt5)'
search --no-floppy --fs-uuid --set=root 6cace587-a44a-4bc2-87a8-dd72a3fe82ed
linux /boot/kernel-2.6.37-gentoo-r4 root=/dev/sda5
} |
when trying to boot this entry i get error:
http://oi53.tinypic.com/s688c7.jpg
i also tried to use change kernel options in grub.cfg
| Code: | | linux /boot/kernel-2.6.37-gentoo-r4 root=UUID=6cace587-a44a-4bc2-87a8-dd72a3fe82ed |
but result was the same
i am not sure is it error in my manually compiled kernel or some incompatibility with ubuntu grub2.
any help will be appreciated. |
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Jaglover
Watchman
Joined: 29 May 2005
Posts: 8291
Location: Saint Amant, Acadiana
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az20110303
n00b
Joined: 21 Mar 2011
Posts: 30
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| Posted: Wed May 18, 2011 5:54 am Post subject: |
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| Jaglover wrote: | | Looks like missing root filesystem support in kernel. |
i included support of ext2,3,4 reiserfs into kernel. file system of my gentoo partition is ext4. partition table of hard disk is GPT. |
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whiteghost
Guru
Joined: 26 Jul 2009
Posts: 374
Location: north dakota
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| Posted: Wed May 18, 2011 6:19 am Post subject: |
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please post your .config and lspci -kvm on pastebin
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az20110303
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Joined: 21 Mar 2011
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whiteghost
Guru
Joined: 26 Jul 2009
Posts: 374
Location: north dakota
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| Posted: Wed May 18, 2011 7:38 am Post subject: |
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from your config
| Code: | | CONFIG_SATA_AHCI is not set |
set this to yes, hope it helps
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May you re-discover what the poor in 18th century France discovered, that rich people's heads can be mechanically separated from their shoulders if they refuse to listen to reason. |
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az20110303
n00b
Joined: 21 Mar 2011
Posts: 30
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| Posted: Wed May 18, 2011 10:47 am Post subject: |
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| whiteghost wrote: | from your config
| Code: | | CONFIG_SATA_AHCI is not set |
set this to yes, hope it helps |
Thanks for help, but still the same problem=( |
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Randy Andy
Veteran
Joined: 19 Jun 2007
Posts: 1152
Location: /dev/koelsch
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| Posted: Wed May 18, 2011 12:41 pm Post subject: |
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Hi az20110303.
as i see in your .config, you have to set this option and the belonging for your kind of system, which submenue appears only after setting this to yes:
| Code: |
# CONFIG_EFI is not set
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you will see some help text for clarification your eventually upcoming questions.
AFAIK you ned this option, cause you're using a GPT partition scheme and GRUB2.
Much success,
Andy.
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If you want to see a Distro done right, compile it yourself! |
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az20110303
n00b
Joined: 21 Mar 2011
Posts: 30
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| Posted: Mon Jun 20, 2011 5:40 am Post subject: |
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| Randy Andy wrote: |
| Code: |
# CONFIG_EFI is not set
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Thanks a lot, that helped! Though i did not set
| Code: |
# CONFIG_EFI is not set
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But i set
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CONFIG_EFI_PARTITION=y
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This one was enouht for kernel to boot  |
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az20110303
n00b
Joined: 21 Mar 2011
Posts: 30
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| Posted: Tue Jun 21, 2011 2:07 am Post subject: |
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| There's one more trouble with ext4 on new kernels. To mount r/w ext4 root file system kernel should be compiled with CONFIG_LBDAF. May be it will help to somebody . |
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Hu
Administrator
Joined: 06 Mar 2007
Posts: 23075
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| Posted: Tue Jun 21, 2011 2:20 am Post subject: |
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| az20110303 wrote: | | There's one more trouble with ext4 on new kernels. To mount r/w ext4 root file system kernel should be compiled with CONFIG_LBDAF. |
This only applies to x86 kernels, not amd64 kernels. Additionally, depending on other factors, an x86 kernel can mount an ext4 filesystem without having LBDAF=y. I have an x86 system using ext4 for all its filesystems, and it works fine even though I did not set LBDAF. |
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