Okay, so I am installing linux to my USB 3.0 portable hard drive. I've tested it with Xubuntu 12.10 (Installed it to a partition on the portable, with the grub installation on the main hard drive of the computer.) Works good. Thing is, I want to use Linux Mint 14 (cinnamon) instead of Xubuntu. Can I just format the portable's partition, and install Linux Mint the usual way and overwrite the GRUB loader? Or will I have to uninstall GRUB first to get it to show the changes? I'm dual-booting it with Windows 7 x64 Professional. edit:Also, if there's a good grub customizer or any tips for that that would help too. (Like re-arranging the order of OS's, which is default, etc) I'm fine with the basic text view of grub, I know about the "themed" versions of it. Nevermind, I found grub-customizer. That was simple enough.