I wonder if that OnyX warning should be extrapolated to Disk Utility's "Erase" functionality?
As long as you have an SSD or Fusion Drive the answer is YES. That not only applies securely erasing a volume, it also applies to secure file deletion, file/volume defragmenting, or any other operation that repetitively writes to an SSD or PCle-based Flash Storage.
Last edited by joemikeb; 10/14/1501:48 PM.
"All you've got to do is own up to your ignorance honestly, and you'll find people who are eager to fill your head with information" --Walt Disney
