Re: Jessie does not boot (GRUB2 complains with "mduuid not found"

[Pascal Hambourg <pascal@plouf.fr.eu.org>]

Le 23/07/2016 à 03:19, Daniel Guillermo Bareiro a écrit :
> The idea was to re-install without losing the containers I had
> created. After finishing the installation process, GRUB failed
> to boot with this message:
>
> ------------------------------------------------------------------------
> error: failure reading sector 0xb30 from 'fd0'
> error: disk "mduuid/9c7c52338a6635c48476b6866bc3c650' not found.
> Entering rescue mode...
> grub rescue>
(...)
> But I see no reference to the block shown in the previous
> error (mduuid/9c7c52338a6635c48476b6866bc3c650).

It seems that the GRUB core image which is launched is not the one which 
was (or should have been) installed with the new system.

> Any recommendations to fix this issue?

Where did you choose to install the GRUB boot image during the 
installation ? In the MBR (recommended) or in a partition boot sector ? 
If in the MBR, just reinstall it with

grub-install /dev/sda

If in a partition boot sector, make sure that the MBR contains a 
standard boot code (MSDOS-style, not the one from GRUB or LILO) and this 
partition has the boot flag in the partition table.

If available, you can use bootinfoscript to gather boot information on 
the disk.