Some Questions about the encryption / security / erasing

[JannickOS]

Hello guys, i'm new to this forum.

For the past weeks i searched for informations about the safest way to delete the ssd drive in a mac.
While reading about this topic i came to the conclusion that you should send this specific command via linux boot etc. to the ssd.

I know there are tons ob articles about this topic. However no site could explain the following.

With the "on board" options there are several things you can do to delete the ssd:
• delete in discovery partion (like apple suggests)
• delete like above and randomDisk with terminal, multiple times
• delete and make partitions (heard that would mark all cells as empty)
• delete multiple times, and reinstall macos multiple times, copy large files on to the mac to fill up the ssd.

Now how is it or would be possible to restore date from an ssd with all those steps taken, is it? an if so why exactly?
I really want to understand the technical reason.

Thanks so much in advance!

 

[JannickOS]

Oh and what i forgot. When you turn on FileVault, again and again after deleting and than filling up the SSD, how could it ever be possible to restore the data? In this Inception-Movie like state (from what i understand) even the encrypted noise that remains will be encrypted again and again with a new key, so in my opinion restoring would me impossible?

 

[997440]

If you've not yet seen these articles, they might add value to your findings.

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