Arch Linux

pdv

Member

Registered: 2018-03-04

Posts: 1

How to properly update GRUB?

I am facing a problem with GRUB. Each time I do a new install I want the new OS to not delete the older OS-s from the boot menu but it always does so. Is it sufficient to install os-probe. I remember doing so but still it overwrote everything.

Any guidance highly appreciated.

Thanks in advance.

ray731

Member

Registered: 2018-01-27

Posts: 23

Re: How to properly update GRUB?

When you install a new OS, don't install its bootloader but just add manually the new OS entry (can be found in the net) in your actual grub.cfg.

Last edited by ray731 (2018-03-04 06:43:51)

Fixxer

Member

From: Poland

Registered: 2011-08-29

Posts: 233

Re: How to properly update GRUB?

ray731
Please read /boot/grub/grub.cfg header ...

pdv
Just "tell" other distros not to install Grub. Anyway ... the description of situation / circumstances is too general (BIOS "legacy" or UEFI, one or more disk drives, etc.).

Next you should choose your main distro and its bootloader. Then you can add other systems eg. to /etc/grub.d/40_custom =OR= if you have more than one hard disk drive you can chainload straight to another grub.cfg file (generated by other distribution's Grub).

Read: https://wiki.archlinux.org/index.php/GRUB#Dual-booting .

Last edited by Fixxer (2018-03-04 09:01:27)

ray731

Member

Registered: 2018-01-27

Posts: 23

Re: How to properly update GRUB?

@Fixxer
This header is misleading. Backup this grub.cfg and edit it as you wish.