I tried installing Debian 8.7 on my Lenovo FLEX laptop. I downloaded the Netinstall from Debian's website and wrote the ISO file to a USB stick.
When I ran through the install process, it gave an error when it came to updating and installing GRUB. I forget the exact wording, but it was an error with
update-grub. I continued installing despite the error.
If I try booting into Debian, I get a black screen with this error and command line...
error: unknown filesystem Entering rescue mode... grub rescue> _
Here are images of the error, along with my BIOS's security and boot settings.
How do I install and boot Debian correctly with UEFI? (I also do not know much about UEFI vs Legacy booting).