On 12.06.2011 04:28, Bruce Dubbs wrote:
> I'm trying to manually run grub-mkconfig to establish grub-1.99
> installation instructions for Linux From Scratch.
>
> I am getting:
>
> grub-mkconfig -o /boot/grub/grub.cfg
>   /usr/sbin/grub-probe: error: cannot stat `/dev/root'
>
> Doing some investigating grub-mkconfig is running:
>   /usr/sbin/grub-probe --target=device /
>
> Drilling down, grub-probe is doing:
>   device_name = grub_guess_root_device (path);
>
> Which in turn is doing:
>   grub_find_root_device_from_mountinfo( "/", NULL );
>
> This is reading /proc/self/mountinfo.  The problem here is that this
> file does not give the device, but specifies /dev/root:
>
> 13 1 8:15 / / rw,relatime - ext3 /dev/root
> rw,errors=continue,barrier=0,data=writeback
>
> The kernel is 2.6.39.1, but 2.6.37 seems to give the same thing.
> grub-probe should be able to detect /dev/sda15, but fails on newer
> kernels.
>
> grub-probe for grub-1.98 works fine.  A grep there shows no use of
> /proc/self/mountinfo.
>
> Suggestions?
>
update either udev or grub. normally /dev/root should be a symlink.
Newer grub-probe can cope with some other arrangements as well
>   -- Bruce
>
>
>
>
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>


-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko