I installed windows 10 on an ssd with a ASRock X99 Extreme4 motherboard.
From windows, I shrank the windows partition to make space to dual boot ubuntu. I used Rufus 2.11 to create a usb with ubuntu 16.04.1.
The BIOS mode is “Legacy” and I’m getting the message about forcing UEFI. I take it that this happens when the usb media has one boot mode that is different from the computer’s BIOS.
I’ve recreating the usb using the three options for the partition scheme options in Rufus but continue to get the same message.
For Secure Boot, I’ve seen this post and get the result that
Cmdlet not supported on this platform. That post suggests that
You can install Ubuntu by simply inserting the LiveCD or LiveUSB and doing the installation procedure without any problems.
First, am I correct about the problem and should not force UEFI? If so, how can I make the proper install media?