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Back when drives were much smaller, they did in fact do this. You may be asking yourself why don’t the files get erased when I tell it to wipe the drive, and this is understandable. If you want to make sure that the external drive, you’ll want to wipe it in a secure fashion.

However, did you know that you’re not actually erasing anything? While you may not be able to see any files, that drive can still have those files on it, and someone with the know-how and a few apps may be able to recover the files. Not every question will be answered, we don’t reply to email, and we cannot provide direct troubleshooting advice.If you’re looking to get rid of or reuse an external drive, you can go to Disk Utility to format it. If not, we’re always looking for new problems to solve! Email yours to including screen captures as appropriate and whether you want your full name used. We’ve compiled a list of the questions we get asked most frequently, along with answers and links to columns: read our super FAQ to see if your question is covered.

Now both your system and Data volumes are deleted, providing a fresh start for a new owner or new macOS installation. (This option doesn’t appear if you have selected the container or drive on which the volume group appears.) Note that while the main volume is filled in and its name can be changed, and there’s a prominent Cancel/Erase set of buttons, look to the lower-left corner for the Erase Volume Group button.Select either of the two volumes in the container for the system (see figure).