Installing Snow Leopard onto a Macbook Air.
I finally decided to upgrade my old MacBook Air from Leopard (OS X 10.5) to Snow Leopard (OS X 10.6). Unfortunately for me, Snow Leopard wants to be installed from a DVD, and the MBA doesn't have an optical drive.
Rather than buying an external optical drive for $100, I had the husband put a disc image onto a USB flash drive using a MacBook, and I installed Snow Leopard from that. When prepping the flash drive, it's important to Format a new Mac OS Extended (Journaled) onto the flash drive, rather than drop a .dmg file onto it; otherwise you won't be able to boot from the flash drive. More details on installing Snow Leopard from a USB drive are available here.
Tags: hardware mac psa