How to edit and remove Grub?

OK I have a problem. I have both Windows and Linux installed on two SSDs with each Bootloader on the OS SSD. By default the Windows SSD boots. I boot into Linux using the Boot Menu by pressing an Fn.

Now for some unknown reason the GRUB Menu boots and select with SSD to boot from. I find this to be really annoying.

I want to this back the way I had it. The Drives Boot order set by the BIOS/UEFI. It goes SATA 0 and SATA 1. The first is my DVD Burner. The other is the Win10 SSD. That is what I want.

The best to have two OSes installed on each drive w/ bootloader on their Mass Storage Drive. Windows boot if tuned on. Linux again only if I press the Boot Menu Key.

I did try looking at the WIKI but I got was how to install GRUB and Configure it afterwards.

Where is the Config file located at so I can do it by hand?

Thank you.

/boot/grub/grub.cfg

1 Like

less /boot/grub/grub.cfg

the file content starts with:

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

so, although
/boot/grub/grub.cfg
is the config file
this is not what is edited
to configure grub

So how do I edit GRUB then?

See above

  • /etc/default/grub
  • grub-mkconfig

https://wiki.archlinux.org/index.php/GRUB#Configuration

If understand you correct - you want to use the firmware boot override to select which disk to load the operating system from - correct ?

The reason your system boots to grub is because of an entry in the /boot/efi/EFI.

Grub is usually set as the default bootloader by overwriting the windows bootloader with the grub efistub.

If you are satisfied with the firmware boot override using a Fn then you can remove the boot entries - the safe way is to use efibootmgr

List your entries

$ efibootmgr

Then remove the manjaro entry by using the four hex digits representing the entry e.g. FFFF

$ sudo efibootmgr -bFFFF -B

Repeat if you have e.g. Linux Boot Manager

2 Likes

No don’t have that loaded. I hold down a key on my keyboard to select which drive to boot from. I do the same with Flashkeys.

That is what I say - e.g. on my Lenovo system it is F12 to select bootoveride

it’s different with each system.

One Question: How did the way I had things set up where each OS Bootloader was only install on the Drive it’s OS is on, changed?

GRUB didn’t have an Entry for Windows 10 at all. When I rebooted or turn the System on, Windows 10 loads by default.

I found the actual problem. GRUB is also on same SSD Windows is on. I had GRUB only on Linux. By default Windows boots second. The DVD burner boots first. To the third SSD Linux is on I used the BIOS Boot Key to select which drive to boot.

I forgot to mention this:

I finally figure out that GRUB is on the Windows SSD. DUH!!!

Now I need to remember the Win10 password.

What kind of password are you talking about? BitLocker key?

No the Login password. For strange reasons I might have temporary forgotten it. But I will remember it sometime later…

Racing Thoughts can and will cause this. That’s something everyone gets, but some get it more often.

Yesterday I getting more Aggravated by nearly everything. I have no clue what start it to begin with.