I was wondering if there was any way to secure a MacBook Air's data in case it is stolen or somehow render the computer useless. I already put a password on it and require it at logon and such, but someone can still potentially use a superdrive, pop in the restore disc, and remove the password, can't they? Is there any way to put a password on booting kind of like how on PCs you can set a password so that no one can boot from any device other than the HD? Or maybe something like a BIOS password? I don't want to have to use FileVault as that will slow down the computer even more and probably eat away battery and CPU cycles on encrypting and decrypting.