I have created a USB install disk to install with bootcamp on my Early 2011 15" MPB on OSX Lion. I tried to use the built in Bootcamp tool to create the USB, but could never get that to work. So I followed a walkthrough and used Diskpart on my other Windows 7 PC to create the disk. When I try to boot to the USB device on my MBP, it comes up statin "No bootable device". I tried it on my PC and it works fine. Anyone else run into this problem?