How to wipe data from ssd

User wrote:

If one is so very concerned about Lifting Erased Data from an Erased Drive - time allowing from your end - follow the suggested Total Erasure and reinstall the OS.

Yes, I'm very concerned... I can confirm. I'd like to sell the mac and I don't want another person that I don't know to be able to access with a very few steps my personal data. Even if I applied the suggested (by the Apple documentation and in your post) "total erasure", a simple test with a new account after erasure proved that I was able to recover previous data.

User wrote:

Though, attempting to lift the previous data will require setting up the computer again with a User Account and reinstalling the Lifting Software to attempt to retrieve the data.

Kind of defeats to intended end purpose though.

Yes, I set up the computer again with a testing user account just to see if the buyer would be able to "lift" my personal data. And the test succeeded. Why "kind of defeats to intended end purpose"? The end purpose was exactly to be sure that anyone would not be able to recover my data, and the test proved that it is possible.

The matter is quite linear, is there any possibility to completely wipe data from a SSD with a disk erasure and make them unrecoverable?

And now it can be updated as: excluding encrypting the SSD with FileVault (that unfortunately I didn't do with the first erasure) is there any other way to follow (based that the ones suggested in the Apple instructions didn't work) to reach this purpose?

Thank you, yes I'm trying also to search for information and I found the article you linked. I'm not sure if there is a kind of contradiction in these two parts:

If your Mac comes equipped with an SSD, Apple’s Disk Utility software won’t actually let you zero the hard drive.

In a tech note posted to Apple’s own online Knowledge Base, Apple explains that secure erase options are not available in Disk Utility for SSDs.

And then:

From a Terminal command line, type:

diskutil secureErase freespace VALUE /Volumes/DRIVE

This is basically the "zero" procedure.. So in the first step in the article is mentioned that in a SSD is not possible to zero the drive, but then the command is basically the zero procedure.

I have a MacBook Pro 13-inch, Mid 2012 with Catalina installed.

The ssd was installed 3 years ago, after the original disk failed, in an authorized Apple support center.

The ssd installed is SSD 2,5 500GB CRUCIAL SATA3 MX500 , TRIM is not enabled

Thanks

I've tried with terminal in the recovery mode but there was an error:

Error with secure disk erase: Secure erase by writing a run of bytes to an APFS Volume makes no sense due to its possibly-unbounded size (-69489)

I specify that when I erased the SSD the second time following the bootable installer procedure, the only possible choice was a APFS Volume format.

As an update, I again erased the whole physical SSD, this time rebooting I had the opportunity to select the HFS Journaled with the GUID Partition Map.

Now it's proceeding with the secure erase with command line, I'll keep the discussion updated.

Thanks

I've used so far the free version of Wondershare Recoverit