I run the latest Arch Linux image on ASUS Sabertooth 990FX and get this error.
Failed to install override security policy.
How can i fix it?
I ran into the same error on an Asus UX21E machine. The latest BIOS (v 214) didn't fix the trick, and my USB disk was properly prepared as a EFI boot devices.
I was able to work around the problem using a hack I found on a related thread on the ArchLinux BBS. The gist of it is that since this system shipped with Windows 7 it doesn't have Secure Boot stuff enabled by default (in my case it isn't even supported). This thows off the ArchLinux boot routie which seems to expect it.
You can disable to check entirely by switching out which file the EFI system boots to. There are three
Worked like a charm for me. For the record I used the 2013-11-01 Archlinux media.
The only reference I can find to that error message is in the source code to
It's conceivable that a firmware upgrade would fix this problem, but I can't make any promises about that. If a firmware upgrade doesn't help, I recommend you disable Secure Boot in your firmware. Alternatively, you could try installing using shim rather than PreLoader; shim uses a different method to work around Secure Boot problems. Yet another option is to install your own keys in the firmware, but this procedure is quite tedious. Unless you really want to avoid using Microsoft's keys, this method is likely to be too much effort.