Okay, second attempt :)

The SD card used in my previous post didn't work no matter what else wasn't connected.

I used a freshly wiped 1TB external HDD Toshiba to successfully install ChimeraOS. However, what's shown in the picture flashes for about a second before going away and even after waiting 10 minutes nothing happens.

Nothing else is plugged in and have tried several manual reboots. Boot security is off and boot priority is for this HDD.

What am I doing wrong? :)

I've seen where others have had this issue, but it does still boot into either desktop mode or Big Picture (their primary issue being long boot times).

However, I've also seen where others state Chimera doesn't like multiple drives and the issue is that is sees the external its installed to and the internal Windows is on.

I want to keep Windows. Is the best choice to buy new internal storage and swap it out?

Thank you in advance! :)