Summer is allegedly coming: the season when your Mac could see its harshest use. Does yours get too hot?
Mac
Like colds and flu, adware is succeeding where proper malware does not. However its consequences can be as serious.
On some iMacs at least, the settings in Energy Saver are partly ignored. This must be a bug.
Something odd has happened to your Mac. Last time you used it, it worked fine, but doesn’t any more.
Sunday morning nightmare: how a missing component of OS X brought my iMac to its knees.
Enjoy being a computer owner-user-maintainer while you can: those days are NUMbered.
El Capitan has made the checking and repair of storage more complex. Here is a clear explanation of what to do.
How to run individual components from sysdiagnose.
Looking in greater detail at what you can get from running sysdiagnose.
When you have tried everything else, this shell command will throw the book at your problem, running all the diagnostics it can.
The Eclectic Light Company 