Hello, i have created Ubuntu 20.04 instance and during GRUB update i see GRUB was installed for UEFI. Its puzzles me since there is no /sys/firmware/efi in system and Ubuntu already have record of incorrect GRUB updates breaking system. So, is Ubuntu 20.04 instances is UEFI based or BIOS?
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Accepted Answer
Hi @nayklost,
You are correct, I just created a droplet and I can see that there is no folder /sys/firmware/efi. Ussually, as you’ve stated as well, the most common way to see if you’ve used UEFI to boot is if you have the folder /sys/firmware/efi.
Another way to see if you are using UEFI is to try and run the command:
efibootmgr
If it returns :
EFI variables are not supported on this system.
Then for sure, it’s not UEFI but BIOS.
Regards, KFSys
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