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Philip Webb wrote: |
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> My motherboard went on the blink earlier this week. |
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> I've now successfully installed a new one, |
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> but now can't get the kernel to find the SATA hard disk ("803 etc"). |
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> |
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> The problem seems to be that the kernel has AHCI enabled, |
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> which was necessary for the old mobo, |
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> but the new one's BIOS doesn't have an option to select AHCI. |
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> The Ubuntu + Mandriva partitions start properly, as does System Rescue, |
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> so the problem has to be in the Gentoo kernel configuration. |
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> |
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> (1) Can I simply drop AHCI from the kernel or do I need to do something else ? |
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> (2) Can I recompile the kernel without going thro' a partial re-install |
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> or do I need to do a change-root etc to get it to work ? |
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> |
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> Can anyone advise ? |
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> |
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If you need to rebuild the kernel, try this. Boot into you other |
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distro, Mandrive or Ubuntu should work fine. You just need the chroot |
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command. Mount the Gentoo partitions just like you would during the |
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install. Just mount them tho, NO file system or disk formatting stuff. |
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;-) Once mounted, just follow the chroot instructions just like in the |
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install. These are the current ones: |
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|
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cd / |
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mount -t proc proc /mnt/gentoo/proc |
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mount --rbind /dev /mnt/gentoo/dev |
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cp -L /etc/resolv.conf /mnt/gentoo/etc/ |
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chroot /mnt/gentoo /bin/bash |
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env-update && source /etc/profile |
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|
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Once you are in there, cd to /usr/src/linux and make the needed changes, |
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recompile, copy the new kernel over, edit grub.conf if needed and then |
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reverse things so you can reboot. Don't forget to run env-update just |
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before exiting. Also, I sometimes have trouble unmounting some |
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partitions. Just unmount all you can before you reboot. I usually |
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can't get the dev and root ones unmounted. It appears that something |
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gets busy and can't be stopped. Your mileage may vary tho. |
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|
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You should be able to reboot Gentoo and hopefully the new kernel will |
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work. Also, check into options you can add to the grub line when |
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booting. Remember, you can edit grub and change the boot process. I'm |
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assuming you are using grub instead of lilo. |
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|
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Hope that helps. |
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|
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Dale |
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|
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:-) :-) |
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|
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-- |
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I am only responsible for what I said ... Not for what you understood or |
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how you interpreted my words! |
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|
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Miss the compile output? Hint: |
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EMERGE_DEFAULT_OPTS="--quiet-build=n" |
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