your Mac holding down the "Option" key when you restart. You can then select your new installer from the list of options that appear on start up. Did these steps work for you? Leave a comment! What do you think of Apple's new Mountain Lion? this will create a DVD image that will be visible from the boot menu and will install without problems ttp://www.hightechdad.com hightechdad Ah yes, I was having some issues figuring out which "1 Partition" to select since my initial burn didn't show when rebooting my Mac. Testing a different method. I will test with the new -p flag. Thanks! Benoit Should work, my friend just did it and it worked flawlessly.  i will personally try it tonight on my Imac at home.  I scraped my only dvd i brought to work when i tried without the -p option ;-) ttp://www.hightechdad.com hightechdad Yeah, I have burned through 1 DVD already. I'm testing a different method now (prior to the -p flag). If it works, I will post as is (as I'm out of DVDs as well -- grin). StevesWeb I tried the USB thumb drive procedure on my recent model iMac and it worked perfectly. Thanks! ttp://www.hightechdad.com hightechdad Thanks for letting me know! Good to hear! Jon Trying the single layer copy method, and it seems the size of the single layer image isn't enough (I get "cp: /Volumes/OS X Mountain Lion DVD/usr/standalone/i386/boot.efi: No space left on device" in Terminal). Any ideas as to what I could