V Wed, Sep 08, 2021 at 09:01:42AM -0400, Simo Sorce napsal(a):
> If I try to do this I get an error:
> # grub2-editenv - set menu_auto_hide=1
> grub2-editenv: error: environment block too small.
> 
> What the issue here ?

Perhaps /boot/grub2/grubenv is corrupted and grub2-editenv is not very good at
reporting errors. This happens when the file was accidentally truncated. Does
it have 1024-byte size?

If it does not, back up the file and reinitilize it with
"grub2-editenv - create" and then insert the original values with
"grub2-editenv - set ...". If you don't have UEFI system, you will need to
reistall grub in MBR to locate the new file's position on a block device and
write the position into the newly installed loader.

-- Petr

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