The only way I can seem to get Fossapup64 to boot on USB is by launching it in No KMS mode, otherwise I get a black screen. I don't see the same option on the internal HDD where I have a frugal installation. This particular computer also got a black screen when trying to run Windows 7, but works completely fine with Windows Vista, so not sure what the issue is there.
If anybody knows how I can boot into No KMS on a frugal installation on HDD I'd be very grateful. I'd be able to edit stuff on there using the bootable USB in No KMS.
Cheers!