I made a bootable USB stick with a Lion installer, so that I can install Lion on my Mac Mini 2010. I can use the USB stick too to start up with Lion on my Mac Mini 2009. But I just bought a Mac Mini 2011 and it is not possible to start up my Mac Mini 2011 with that USB stick. When I try this using the Alt-key while starting up I see a 'forbidden' mark and the Mac Mini 2011 goes off.
I want to make a clean install on the internal HD and make three partitions: System, Documents and BOOTCAMP. It was no problem using a Mac Mini 2009 or 2010, but it appears not to be easy using my Mac Mini 2011.