How do I reset my MacBook Air for a new user?
I have an older MacBook Air that I want to pass on to another user. Since it does not have a CD Drive, how can I reset the OS?
You would use the Recovery Partition to erase, and resintall the Operating System, provided you are using Lion or Mountain Lion.
Boot to it by holding don the OPTION key while booting, then select the Recovery Partition from the list of bootable partitions.