I ve recently purchased a U410 laptop with i7, 8gb RAM, 1TB HDD, Windows 8 preinstalled with no SSD disk.

I ve run the Disk Management tool and show to many partitions as seen in the following picture



I would like to install ubuntu 12.04 on my laptop without losing Windows 8.
Since no SSD is present do I still have to use the dmraid util as suggested in other posts?
Which is the best way to create new partitions? One for keeping my file and one for installing linux?
I guess the best approach would be to resize the Windows8_OS partition. Which tool would you suggest to use so I don't end up with messed partitions?

I ve read in other posts that I will need to change my BIOS to Legacy Mode, is that true?
Should I start the installation and choose the method "Install Ubuntu alongside with Windows" ? Will this step resize my Windows8_OS partition and leave the rest intact? What would you suggest?