Disk Utility has 4 options for this. I tried Option 2, which states that it is two-pass. It looks like it is going to take around 4-5 hours for one drive (2 TB). I have six more drives to erase, total of 4 more TB.
Is there a faster option for this? I’ve done about 50 different Google searches and several searches here as well. So far I can’t find a faster option…
“ The modern solution for quickly and securely erasing your data is encryption. Strongly-encrypted data can be instantly “erased” by destroying (or losing) the key (password), because this renders your data irretrievable in practical terms. Consider using APFS encryption (FileVault).”
But When I encrypted then did an erase, the Disk Drill app still found files to recover. So couldn’t someone else do the same?
If you want drives securely erased, this is how long it takes unfortunately. the secure erase process is writing data onto every part of the drive (over the top of your previous data) and then erasing it.
Think of a HDD like a book with an index all written in pencil. Anything “Quick” is merely erasing the index which still leaves the data on each page, even if it’s not referenced from the index.
(this is where the analogy gets strained)
A Secure erase is effectively writing other random information on top of your information then rubbing it all out so you can’t read what was there from the indents on the page.