How to increase boot timeout

whois1230 · 02-15-2021, 04:46 AM

Hello, I recently installed Kali Linux on my computer, I now have 4 Operating Systems. I want to increase the boot timeout in the grub menu. Right now it's 5 seconds, and I want to make it 10. I tried to do this with Grub Customizer on Ubuntu, but it doesn't change. The first OS that appears in the grub menu is Kali, followed by Ubuntu, Windows 10 and Fedora. When I move Ubuntu to the top of the list in BIOS, Kali no longer appears in the grub menu. I want to have Ubuntu as the first entry in boot, but when I set it as 1st, Kali no longer shows in grub. And I also want to have 10 seconds timeout before I choose an OS.

Emerson · 02-15-2021, 06:01 AM

whois1230,

what do you think people who come here to help Linux users think of you?
Internet is a place where people meet, without knowing nothing about each other. The way you write, the problem you are having, all this shapes the attitude towards you. Genuine sincere noob having a genuine problem gets all the friendliness and help she/he needs. So lets see what your post tells us.

Kali Linux. This is the favorite of sysadmins and wannabe hackers. It is not supposed to be installed to the hard drive.
The questions you are asking reveal sysadmin you are not. Well, maybe you want to become one? But then you would be reading Grub documentation, they have excellent online manual. So you are not a sysadmin candidate, either.

Which leaves us only one conclusion - wannabe hacker. These are more often subject of condemnation and/or jokes than help.

jamison20000e · 02-15-2021, 06:14 AM

Code:

sudo vi /etc/default/grub
sudo update-grub

L

L

Signatures ^v here: have links that may help on your two steps back:::

yancek · 02-15-2021, 07:09 AM

You seem to be very unfamiliar with the way Grub works based on what you posted. Grub2 Manual at the link below.

https://www.gnu.org/software/grub/manual/grub/grub.html

Are these systems all on one hard drive?
Is this an EFI machine?
Was Kali the last OS you installed?
After changing the boot priority to Ubuntu, did you update Grub as suggested in the post above?
Best to put Kali on a flash drive and format the partition on the hard drive containing Kali
I would suggest that once you are able to boot the systems the way you want that you read the Kali documentation thoroughly before doing anything with it.

https://www.kali.org/docs/