Hey everyone,
I just installed EndeavourOS using Ventoy in Legacy BIOS mode because Ventoy wasn’t booting in UEFI mode (I was getting an empty black screen with just the word “ation” in the center, and the system would shut down after about 5 seconds).
After the installation, I switched back to UEFI, but now when I boot the system, I end up in a GRUB terminal. I need to use UEFI mode and can’t rely on Legacy Boot. Does anyone know how I can fix this?
Thanks in advance!
If you boot the ISO in legacy mode, it installs in legacy mode.
You can’t boot a legacy install via UEFI. You would have to convert the system first but it would be much easier to reinstall.
How I can convert the system?
Welcome @xii69 
Seeing as you’ve only just installed, you might just re-install again, with the correct UEFI settings.
Thank you!
It will be very nice if I could “convert the system”
I don’t know how
It isn’t easy.
You would need to make room for an EFI partition. Create and format the new partition. Boot the ISO in UEFI-mode, chroot into the system, install a bootloader, configure the bootloader and regenerate the initrams.
Reinstalling would be vastly easier.
You might have a look at this thread, making note of the warnings given to backup data:
Archlinux wiki to convert BIOS(legacy) to UEFI
The 6th post there provides some direction you might consider, if you’re feeling brave.
Well, now that I see, reinstallation takes less time than this
Thanks for the kind support
What do you suggest as an alternative for Ventoy?
Just write the ISO directly to the USB stick. You don’t need to use a booting tool like ventoy.
Simply copy-pasting it?
Is this a feature of EndeavourOS?
Any specific USB file system? (my USB stick supports NTSF & exFAT)
Also if I reinstall the OS there will not be 2 boot managers? I had this issue before which I had 2 boot managers because I switched from a Linux distro to another one and there was 2 boot managers
No, you can use dd via the command line or install a GUI tool like popsicle
No, because UEFI and Legacy are fundamentally different.
That data stored in your EFI variables. You need to clean those up manually when you remove an OS. Sometimes it can be done straight through the BIOS. If not, you can use efibootmgr
This is a useful article:
It’s probably also worthwhile reviewing this article. It discusses issues you need to account for (including legacy vs UEFI):
EndeavourOS Installation - Live ISO installer info tricks & tips
Nice & Thanks, going for a reinstall.
Endeavouros is based on Arch so secure boot isnt supported unless you implement it yourself
I’ve disabled the secure boot too (didn’t switched to Legacy BIOS), no difference.
What should I do to implement it by my self?
Are you sure you are booting the right entry?
Maybe that is the grub from one of your previous installs
There was only 3 options
Windows boot manager
EndeavourOS
UEFI OS
Tried the 2 and 3, both the same grub page
