Sooo, I have decided to finally install Ubuntu on my PC. I downloaded the 12.04.3 Desktop 64bit version and got it on an USB flash drive using Universal USB Installer.
While trying to boot from the stick, I encountered some Kernel Panic which caused everything to freeze, but after loading Ubuntu on the USB flash drive again and making sure that the drive stays in the exact same USB port, it booted. When I try to install Ubuntu, though I only have two options - formatting the harddrive and installing from scratch, or making the partition myself. Yeah, the latter was exactly what I was looking for, so I chose that. But behold - another problem right here: The installation only shows an empty 1TB drive. It shouldn't be empty, though. I actually have two partitions on there - Windows 7 is installed on one of them - and about 100 GB of unallocated space.
The partition style of my HDD is MBR. The laptop came installed with Windows 8, which I didn't like, so I formatted the drive and installed Windows 7. Back then, I had to switch the boot mode from UEFI to Legacy Bios in order for the PC to recognize the HDD, so I think I may have made a mistake at some point there.
Does anybody have an idea what the problem might be? Or how I could fix it? I'm pretty new to Ubuntu and I'm ashamed to admit that the whole UEFI-thing is a little bit of uncharted territory to me, as well.
Thanks in advance,