I have a Ubuntu 12.04 install on an external HDD. On my Dell Laptop, I tried to boot into 12.04 by connecting the USB 3.0 compatible external HDD to USB 3.0 port but it wouldn’t show the grub (v2.00-7ubuntu11) boot screen. A rather silly workaround helped, however. I connected it first to a USB 2.0 port so that the grub screen loaded. Then, I disconnected the HDD and reconnected it to USB 3.0 port and voila. I don’t know if it’s the BIOS or grub (or both?) but this is what I’m going to do from now on.
[HOWTO] Get the Fedora 16 wallpaper for Fedora 15
Fedora 16 Alpha is coming out soon and they have selected Fedora 16 wallpaper. Here is how I installed it in Fedora 15:

![login select Gnome-Shell login select Gnome Shell [HOWTO] Install Gnome Shell (Gnome 3) in Ubuntu 11.10 Oneiric Ocelot](http://www.khattam.info/wp-content/uploads/login-select-Gnome-Shell.png)