Re: grub-uninstall

[Narcis Garcia]

El 8/11/22 a les 20:43, Pascal Hambourg ha escrit:
> Le 08/11/2022 à 12:00, Narcis Garcia a écrit :
> > My mistake was to do "grub-install /dev/sda" when I need to boot from 
> > /dev/sdb
> >
> > Now I've done "grub-install /dev/sdb" but I don't want GRUB messages 
> > appear on /dev/sda when BIOS boot goes there. It's confusing.
> >
> > I want to know how to revert actions done by grub-install on first 
> > disk sectors, without losing partitions.
>
> AFAIK, grub-install does not back up copy the original contents of 
> sectors the boot image and core image are written to. So the best you 
> can do is overwrite GRUB's boot image in the MBR with another boot 
> program, e.g. with install-mbr from package "mbr".

I wish at least to overwrite MBR program without wiping partition table 
AND clean (with zeroes) next sectors written by grub-install.


--
Narcis Garcia