I have an early 2011 13" MBP and wanted to create a flash drive I could boot Snow Leopard from for reinstallation. I imaged the OS DVD that came with the machine onto my hard drive and then imaged the flash drive (8GB) with that DMG. When I try to boot the machine from the drive, it shows the Apple logo for about 2 seconds and then kernel panics. Holding option upon boot to select the boot device works fine and the drive itself pops up the custom Finder window with the Install app shortcut and documentation folders the way a normal OS X DVD would upon insertion. Furthermore, I tried the drive on an early 2008 Macbook and it was able to successfully boot to the OS X installer. The kernel panic happens when I imaged the flash drive both from the OS DVD included with my machine and when I imaged the drive from a plain vanilla retail DVD of Snow Leopard. Any ideas?