How to interpret the code numbers written into your Mac’s log to indicate the reason for shutting down, restarting, or going to sleep.
error
View the same log entries at different times, and their timestamps change. This explains why, and what is going on.
When Time Machine seems to take a long time preparing the next backup, or gets stuck, here is how to diagnose and deal with it.
Once it has started, all attempts to drag and drop in apps will fail with the same error message.
Sometimes, when starting up, my Mac beeps at me. What is wrong with it?
Now you can accuse others of inflating their workout performances, with science to back you up.
My Mac refuses to run apps I bought from the Mac App Store, telling me that they are damaged. Why?
When verifying my hard disk, Disk Utility reports that the ‘keys are out of order’. What do I do next?
Folders on our NAS cannot be trashed, because the Finder reports that they are still in use. How can we fix this?
When starting or quitting Excel, it complains of a file access error. How can I stop that?
The Eclectic Light Company 