

Remove your firmware key by restarting, holding alt, choosing recovery, then in "utilities" choose "firmware assistant" or something.UPDATE: Because of the issues listed later on, I've decided that Windows 8 via Boot Camp is futile. RECOVERY: If you nuke your machine, restore your time machine backup. System and Storage hard drives), and be super careful to not erase the wrong one. Also make note of which drives and partitions remain (e.g. IMPORTANT: Unplug all external and physical hard drives (where possible) that you won't be installing to to avoid accidentally erasing them. This guide is so complicated because the iMac's 27" Mid 2011 SuperDrive doesn't recognise the windows install disc. UPDATE: See comment section below this post.
