Completely clean a 10.11.6 iMac

I plan to replace my iMac (2011) by a Pro iMac.

My current iMac, I give a big kid who is very capable of daling with for example the Apple software.

However I want to completely clean my present iMac and delete any private data and programs that are totally private and or any use for my grandson. I definitely definitely want to remove all personal and financial data, email traffic so that recovery is impossible.

Indeed return my iMac to the factury State when I bought it.

I realized that this is no problem for a user to "revive" all programs and personal data that have been deleten in the iMac in the traditional way.

What is the way better and safer to delete the data of any user on my iMac?

Thank you very much for your help!

Harry Briels

Apple has an article of support for you, what to do before you sell or give away your Mac - Apple supported

Tags: Mac

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