I want Ubuntu as my primary/only operating system. Computer came with presumptive Pre-Installed Windows 8.(touch screen) Help. New Dell Inspiron 15r. Cannot install Ubuntu 12.04-03 or LTS. I need/request step by step instructions to remove Windows 8 or sideline Windows 8. (ie) BIOS settings I need to know: What to have; What settings; When to apply; Boot manager settings. UEFI. Etc. This should be easy, but I am mired in the Herpes that is Microsoft. I end up having a presumed dual boot that will not access Ubuntu. (ie) Step 1: Turn on computer. Step 2: F# to change ... to ... at Dell prompt... I want to use Ubuntu as my primary operating system or my only operating system.