I have a 2009 Mini with a bad disc drive. I used disc utility and made a bootable usb drive with os x 10.6. Everything went well and when I go to boot from the usb drive I select it and it starts to boot then after about a minute I just get the "no access" sign. I tried to boot from it on my macbook pro and it isnt even recognized when I hold down option. It is recognized and mountable once I boot into os x. I'm using a kingston dtse9 16gb drive.