Re: grub-uninstall

[Pascal Hambourg]

Le 09/11/2022 à 05:20, Andrei Borzenkov a écrit :
> On 08.11.2022 23:12, Pascal Hambourg wrote:
> > Then you can wipe the boot image in the first 440 bytes of the MBR and
> > preserve the partition table with
> >
> >    dd if=/dev/zero of=/dev/sda count=1 bs=440
>
> This leaves final 0x55aa signature which may fool BIOS into believing 
> there still *is* boot code.

Isn't the signature required for the partition table to be taken into 
account ?

> > IMO it is not worth wiping the core image sectors. They are useless
> > without the boot image.
>
> Yes, but it is still better to get "no boot device found" from BIOS than 
> blank screen because boot code attempted to load some garbage and 
> silently crashed or looped.

What does it have to do with wiping the core image or not ?