Re: Grub2 install with / on lvm

[Andrei Borzenkov]

В Wed, 11 Feb 2015 12:47:06 -0800 (PST)
address@hidden пишет:

> The quick work around you suggested did not work.  The result of that was 
> when booting it would display several lines of an error message "failure 
> reading sector x?x?x?x from hd1".  These several lines would alternately 
> display and disappear, seemingly as if it was stuck in a boot loop.  A 
> cnt-alt-del would get out of it, then using the SuperGrub2 CD I could get it 
> to boot again after adding the LVM option.
> 
> I am ready to give up on this and do a reinstall (taking more detailed notes 
> next time).  Unless you want me to continue exploring something that would 
> assist you.  I probably won't find the time to do the re-install for at least 
> a day or so, if you would like additional information.  Thanks again for your 
> assistance.

Well, the last chance would be to set your system to use grubx64.efi
directly, bypassing shim. I.e., right now you have

Boot0000* ubuntu        
HD(1,800,fa000,efdf8fb6-08fd-45bc-b62c-ab9bc39721ee)File(\EFI\ubuntu\shimx64.efi)

Do (below is one line!)

efibootmgr -c -d /dev/sda -p 1 -w -L "GRUB on Ubuntu" -l 
'\EFI\ubuntu\grubx64.efi'

-L is title in EFI boot menu - pick your choice. Verify with efibootmgr
-v - HD(...) part should be identical to the above. Check that it is
set as default (i.e. number in BootXXXX has to be first in BootOrder).

Note that it will effectively disable secure boot!