I have a Windows 10 primary installation on an HP laptop, then installed Ubuntu 18.10 same as I've done many times before; turned off all UEFI in Windows and BIOS, turned on legacy support, but this time I can ONLY boot into my Ubuntu thru the system BIOS. I'm stumped, is this some kind of new HP bios thing?
I have to hit escape to get into system BIOS on reboot, select alternate boot option (f9), then BIOS allows me to select Ubuntu boot and only then do I get my standard purple grub boot selection screen. It works, but Jesus its annoying.
Under all previous installations Ubuntu just works, recognizes Windows10, installs alongside it and sets up GRub and boots to Grub. I think I've tried everything to no avail; even ran BootRepairDisk, BCD tells me that I don't have UEFI turned off, but I know I do, I've triple checked it. What the heck?