Hide GRUB when booting

[TheEliteDash]

Oh ok, Thank you I will try it

[TheEliteDash]

Tried fully shutting down my pc, spamming both enter and shift keys but none worked, I suspect the problem is somehow related to my BIOS mode i.e Legacy.

[JiaZhang]

Quote from https://askubuntu.com/questions/16042/how-to-get-to-the-grub-menu-at-boot-time:

Menu will appear if you press and hold Shift during loading Grub, if you boot using BIOS. When your system boots using UEFI, press Esc.

But this is for Ubuntu somewhere in 2010 and I’m not sure whether or not Ubuntu has its own modified GRUB.

@cscs, is your system installed with Manjaro GRUB (the one with green Manjaro background)?

Anyway @TheEliteDash, perhaps for a while you can boot into live-USB Manjaro and just use GRUB_TIMEOUT=2 instead:

@JiaZhang

You need to update your /etc/default/grub:

• To make Windows your default choice, find GRUB_DEFAULT and change its value to Windows menu entry, ex: GRUB_DEFAULT=“Windows Boot Manager (on /dev/nvme0n1p1)”.You can find your Windows menu entry name by running grep menuentry /boot/grub/grub.cfg and look for something with Windows after menuentry.In my system, it’s Windows Boot Manager (on /dev/nvme0n1p1)", but yours will be likely different.You can also use the value after the $menuentry_id_option (which is expanded to –id) rather than the value Windows thing after menuentry; this is actually recommended by the GRUB documentation.The default from fresh installation should be GRUB_DEFAULT=saved, which means the default choice is the last OS you choose.
• To make 2s timeout, find GRUB_TIMEOUT and change its value to 2, ex: GRUB_TIMEOUT=2.The default from fresh installation should be GRUB_TIMEOUT=5, which means 5 second timeout.

Run sudo update-grub afterward to update your GRUB settings.

[TheEliteDash]

Well ok. Thank You

[JiaZhang]

I forgot to mention that you need to be in chroot in order to update the GRUB on your internal drive. Because you use live-USB or live-CD so you need to change the filesystem view to the one in your internal drive, not the live-USB/CD one.

I give you 2 good references on how to do this:

[HowTo] Chroot from or into any Linux distribution

Difficulty: ★★★☆☆ Step 1: Mount your system. This works for both GRUB and EFI systems/installations Okay, the first thing to do is to be root. To do so, open a terminal and type in sudo -i then hit the Enter key. You may then give in your password if prompted. We then need to create a directory where we will mount the target system. In this case, let’s make a directory named “chroot”, by entering mkdir /chroot in the terminal. Time to find where is your system located!! To do so, you may e…

https://askubuntu.com/questions/145241/how-do-i-run-update-grub-from-a-livecd

[alireza138812]

First reinstall grub package :

sudo pacman -Rsn grub && sudo pacman -S grub

And update grub config :

sudo rm /boot/grub/grub.cfg
sudo grub-mkconfig -o /boot/grub/grub.cfg

[JiaZhang]

No there’s no need to reinstall GRUB as his GRUB isn’t corrupted. There’s only a need to update the /etc/default/grub and run sudo update-grub, everything in chroot mode.