Re: GRUB_SAVEDEFAULT how does it work?

[Jordan Uggla]

On Mon, Mar 5, 2012 at 11:20 PM, Chris Murphy <address@hidden> wrote:
>
> On Mar 6, 2012, at 12:07 AM, Jordan Uggla wrote:
>
>> On Sat, Mar 3, 2012 at 2:14 PM, Chris Murphy <address@hidden> wrote:
>>> grub2-editenv list
>>>
>>> <empty>
>>> The file exist, is 1024 bytes, but contains nothing according to this 
>>> command.
>>
>> It's normal for there to be nothing there until you have booted from
>> grub (after changing this option). Have you done so?
>
> Yes.
>
>> If so, the
>> problem may be that you don't have a writable grubenv for some reason.
>> If you press "c" when you get to the grub menu and then run "save_env"
>> it should test this. If it returns without error, your grubenv is
>> writeable, if it gives an error message then it's not.
>
> grub> save_env
> error: no variable is specified

My fault. Try "testvar=foo; save_env testvar".

>
> Are recovery entries exempt from being made default in this manner?

Yes.

>
>
>
>>
>>>
>>> 4.
>>> /boot/grub2 is on an ext4 volume.
>>
>> Is it an ext4 filesystem on top of another abstraction like LVM or
>> RAID? Either would prevent grub from writing to grubenv for safety
>> reasons.
>
> No.
>
>
> Chris Murphy
> _______________________________________________
> Help-grub mailing list
> address@hidden
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-- 
Jordan Uggla (Jordan_U on irc.freenode.net)