Site TIPS PAGE🔎   UP ONE LEVEL
 OJB's Web Site. V 2.1.tip tips mac owen2 
Tip

Up to OJB's Mac Tips List

Secure Erase SSD

To secure erase an SSD (Ensure its contents cannot be recovered)

The usual secure erase isn't available in Disk Utility.
The old technique is not recommended for SSDs.
Alternative is to decrypt, then re-encrypt the whole drive.

Go to Settings > Security and Privacy > Turn off Filevault
Wait for a long time while the drive is decrypted
Re-enable Filevault and set a new key
Wait for along time again while the drive re-encrypts

A Better Way?

Boot from recovery mode, internet, or external disk
Erase the disk as encrypted HFS or APFS
Supply a complex key
Fill the disk with zeros, using mkfile
Terminal command is mkfile SIZE FILENAME
For example: mkfile 100G File100G
Erase the disk again, without encryption



My latest blog post: Avoid Microsoft: If you don't really like computers much you could make things a bit better for yourself. (posted 2024-12-04). My latest podcast: OJB's Podcast 2024-08-22 Stirring Up Trouble.
 ©2024 by OJBServerMacs are BestMac Made
T: 11. H: 190,905,476
Features: RSS Feeds Feedback LogMod: 07 Jun 2024