the alarm beep iMac

I have an iMac 27 ", mid 2011, El Capitan 10.11.6 running. During the last two months, the awakening from its sleep, it gives a single quiet beep... but it is incompatible, that is not all the time, nor even every other time. I searched different forums for what this would result with no result for this particular situation. Plenty of three beeps on MacBook and iMac, but nothing for a single beep that I found so far.

Someone at - it live something similar and discovered a cause and a solution? Thank you

Tom

In the past, some items that I had read on this subject suggested the soft tone, not

like any other startup error beeps and not a natural OK start sound, likely

were the sign of a hard drive failure.

Proof of this idea, is among the suggestions here:

• Recognizing Danger: 5 warning signs showing your Mac has...

Results from a custom search, chosen words in "BOLD", show a few:

https://www.Google.com/search?q=iMac + awakening + related tones + to + fault + hard + drive

To prepare the failure means making backups of your content and not only

a time Machine; you could clone-copy to external hard drive provided in

How to create a copy of system startup support. These boxes

usually include their own power supply and are very handy for troubleshooting.

• Apple OS X and Time Machine tips:

http://www.pondini.org/OSX/home.html

In any case...

Good luck & happy computing!

Tags: Mac

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