I have tried this many times over but I can't seem to get this to work for my situation. Basically, I used to work with Linux but now I just use it to edit videos and photos in Ubuntu Studio. Therefore, as it is no longer my primary OS, I no longer want to have to use GRUB to choose which OS to boot into.
In other words, because I don't use Ubuntu very often it is aggravating to have to choose the OS every time I start my system. I have been able to modify GRUB to where it will boot into Windows 8.1 by default and lowered the timer, but the fact that GRUB starts in the first place is annoying and I know there must be a workaround. Right now my workaround is to run it as a virtual machine, but when rendering my YouTube videos I'm just not getting as much processing power and it doesn't seem to recognize and therefore properly utilize my graphics card. I would much rather use it as a true OS and not a VM.
So, on a UEFI system, how do I make it to where if I want to load Ubuntu Studio I just have to choose the HDD it is installed to as the boot device from BIOS/UEFI?
Let me know if you need any info I may have accidentally left out