Hello! I have a dual boot W7/Ubuntu 14.04 laptop with USB 3 external HD connected into dock-station. In BIOS Setup I have "Legacy MBR" option enabled (not EFI). Windows occupies my laptop's internal HD and Ubuntu lives on the outside disk. I kinda fell in love with YaST and I couldn't find anything similar quality for Ubuntu, so with a heavy heart (I like Ubuntu) I decided to delete Ubuntu and install OpenSUSE 13.1 instead (with KDE dark theme that I prefer over the greenish one of a newer 13.2).
Is anything in particular I should be aware of when installing OpenSUSE in terms of getting rid SAFELY of Ubuntu and replacing its GRUB2 with OpenSUSE's GRUB?
P.S. I can post my "fdisk -l" output if it would help here, but I'm more concerned with OpenSUSE's install and less with Ubuntu, since I'll be deleting it.