I've been trying to install Ubuntu 15.04 alongside Windows 8.1. Windows 8.1 is currently installed, the computer has two drives, both of which (as near as I can tell), use GPT. The first drive is an SSD, and I managed to resize it and add a partition for Ubuntu. The second is a disk drive.
So after spending many hours on that, I found this question. I switched from 14.04 to 15.04, ecstatic that all my woes would soon be forgotten.
Unfortunately, I cannot even install it as it hangs at the "Preparing to install Ubuntu" screen.
I am really at my wits end here. Why would it hang at that screen? What can I check to make this dual boot work?