All we need is an easy explanation of the problem, so here it is.
So, I set up a Ventoy Flash Drive with 3 ISOs on it:
But when I boot ubuntu, I get a grub screen and after selecting ubuntu, I get the error:
error: you need to load the kernel first!
Windows 10 and Arch work fine.
How to solve :
I know you bored from this bug, So we are here to help you! Take a deep breath and look at the explanation of your problem. We have many solutions to this problem, But we recommend you to use the first method because it is tested & true method that will 100% work for you.
It’s might be UEFI boot issue.
Try to switch between legacy boot and UEFI boot in your BIOS settings.
So, my problem solved itself.
While installing Ubuntu on a old laptop I found in my store room, I noticed that the installation works. Now it works on my main PC too!
Note: Use and implement method 1 because this method fully tested our system.
Thank you 🙂