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flaviari
n00b
Joined: 19 Oct 2013
Posts: 6
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 Posted: Sat Oct 19, 2013 8:59 am Post subject: [SOLVED] GRUB2 migration |
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I'm trying to migrate from GRUB legacy to GRUB2, following the migration guide. Unfortunately, I run into a snafu quite soon when trying to create my config file:
| Code: | grub2-mkconfig -o /boot/grub/grub.cfg
/usr/sbin/grub2-probe: error: failed to get canonical path of `PARTUUID=84231979-03'.
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My old GRUB config file boots using a partuuid (as otherwise it cannot reliably find the boot drive, drive letters kept shifting):
| Code: | ...
title Gentoo Linux 3.8.13 UUID
root (hd0,0)
kernel /boot/kernel-3.8.13-gentoo root=PARTUUID=84231979-03
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Any hints as to how I create the config file?
Last edited by flaviari on Sat Oct 19, 2013 9:10 pm; edited 1 time in total |
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ulenrich
Veteran
Joined: 10 Oct 2010
Posts: 1483
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| Posted: Sat Oct 19, 2013 12:03 pm Post subject: |
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PARTUUIDs can change depending the mode you boot:
efi , bios
sata, ata
For me, it is far more easy to handle my partitions using labels:
Also grub2 is able to use them instead of machine like code of UUIDs |
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mv
Watchman
Joined: 20 Apr 2005
Posts: 6780
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| Posted: Sat Oct 19, 2013 5:02 pm Post subject: Re: GRUB2 migration |
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| flaviari wrote: | | Any hints as to how I create the config file? |
I suggest to call grub2-mkconfig only once and to edit grub.cfg later on only manually. So I suggest you first replace your PARTUUID=... (whereever you have originally entered it) by the device which it is currently, so that you are able to produce a reasonable grub.cfg example by running grub2-mkconfig. Then in the generated grub.cfg you can change it back manually for the kernel command line (and do further changes at your discretion, since the generated grub.cfg example is almost never what one wants unchanged). |
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nlsa8z6zoz7lyih3ap
Guru
Joined: 25 Sep 2007
Posts: 388
Location: Canada
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| Posted: Sat Oct 19, 2013 5:33 pm Post subject: |
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| Quote: | | Any hints as to how I create the config file? |
just used the manual configuration section of
http://wiki.gentoo.org/wiki/GRUB2_Quick_Start
to rewrite my grub-0.97 configuration file. I don't like grub2's automatic configuration. |
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creaker
l33t
Joined: 14 Jul 2012
Posts: 651
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| Posted: Sat Oct 19, 2013 5:39 pm Post subject: |
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| Quote: | | failed to get canonical path of |
It is known bug. This error message appears on attempt to configure grub by PARTUUID without initrd.
You can solve it by either adding initrd or changing partition identification from PARTUUID to something else (e.g. by label) |
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albright
Advocate
Joined: 16 Nov 2003
Posts: 2588
Location: Near Toronto
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| Posted: Sat Oct 19, 2013 6:04 pm Post subject: |
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| Quote: | | I'm trying to migrate from GRUB legacy to GRUB2 |
why?
_________________
.... there is nothing - absolutely nothing - half so much worth
doing as simply messing about with Linux ...
(apologies to Kenneth Graeme) |
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flaviari
n00b
Joined: 19 Oct 2013
Posts: 6
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| Posted: Sat Oct 19, 2013 9:10 pm Post subject: |
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Thanks for the Quick guide link - the manual config section helped me greatly  .
As for why I wanted to upgrade - hopefully to be able to boot without having to resort to PARTUUID, and (hopefully) to have a slightly easier new kernel installation (yes, I'm lazy  ).
Thanks for all the quick replies! |
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