You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Disk Utility

When I try to partition an external drive, using Disk Utility, there is no format choice for encryption. How do I encrypt a partition?

MacBook Air 13″, macOS 10.13

Posted on Dec 23, 2021 10:27 AM

Reply
4 replies

Dec 23, 2021 1:26 PM in response to Rod7

All of the below steps were followed wit skips are parts ? Notation is Step 2 in Bold


  1. If you’re protecting an external volume, make sure it’s connected to your computer.
  2. Choose View > Show All Devices.
  3. Select the volume you want to encrypt in the sidebar and note the volume’s file format (either APFS or Mac OS Extended). Then click the Erase button .
  4. Enter a name for the volume.
  5. Click the Format pop-up menu and choose either APFS (Encrypted) or Mac OS Extended (Journaled, Encrypted).
  6. Enter a password when prompted.
  7. If you chose Mac OS Extended (Journaled, Encrypted), to prevent the erased files from being recovered, click Security Options, use the slider to choose how many times to write over the erased data, then click OK.
  8. Writing over the data three times meets the U.S. Department of Energy standard for securely erasing magnetic media. Writing over the data seven times meets the U.S. Department of Defense 5220-22-M standard.
  9. Click Erase.


Disk Utility

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.