I was having trouble booting from a certain DVD on my brother’s Macbook this weekend. I could boot from the DVD on my Macbook Pro, and my brother’s Macbook would boot from other DVDs. I couldn’t figure it out so I called Apple Care to see if they had any ideas for the wonkiness.

Instead of holding ‘c’ to boot from the superdrive, they had me hold the ‘option’ key which allows you to choose where you want to boot from. As simple as it sounds, it worked.

Hope this saves someone from pulling their hair out.