I've been trying to get Ubuntu 13.04 to work on my desktop that came with Windows 8 pre-installed and the UEFI system. Needless to say, I'm having trouble. The desktop in question is an HP Pavilion P6-2738. It also seems that I need to get drivers somehow for the ethernet adapter, but that's a whole different thread.
I went into the BIOS/UEFI editor and disabled secure boot, enabled legacy mode. During installation, Ubuntu says it can't install GRUB2, no matter where I tell it to install it. I'm using the "something else" option and defining my own partitions. I have a seperate 160GiB drive I'm using for it, so maybe that's the issue. I don't know. Any and all help is appreciated, as it's late, and I'm out of ideas.
I'm trying to get it to dual-boot btw. Probably worth mentioning :P
Update: At the end of the installation, it says it's completely removing, and occasionally purging stuff. I got it to install grub to a separate partition. I'm not worried about getting an OS selection screen yet, but just going directly into the boot selection screen and selecting my secondary drive to boot from, I get "OS failed to load".