My iMac has two major flaws: no manual, and no way of removing an optical disk stuck in its drive. Or am I missing solutions?
recovery mode
When verifying my hard disk, Disk Utility reports that the ‘keys are out of order’. What do I do next?
How to repartition and install El Capitan afresh on an old iMac.
Crashes don’t come any harder than when your Mac just sits there, your startup disk missing or unusable. Here is how to prepare for, and recover from, such a hard crash.
The Eclectic Light Company 