Do I need to erase the external disk that I want to password protect?

Looking for the above subject, I found that if I create a new image from a drive, I can password protect this image but not the original drive. In-the-other hand, if I want to password protect the drive itself, I absolutely have to erase it. Thank to confirm my understanding please.

iMac 21.5″ 4K, macOS 11.7

Posted on Nov 28, 2024 3:18 PM

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Question marked as Top-ranking reply

Posted on Nov 28, 2024 3:49 PM

You can encrypt an entire storage device, or can create an encrypted sparse bundle on an existing internal or external storage volume. FileVault can encrypt some volume formats without erasing.


Encrypt and protect a storage device with a password in Disk Utility on Mac - Apple Support (see the info at the bottom of that article, too.)


Sparse bundle info: Create a disk image using Disk Utility on Mac - Apple Support


FileVault: Protect data on your Mac with FileVault - Apple Support


For newer Macs, internal storage is usually already encrypted.


I’ll assume the footer here is correct and you have an Intel Mac here, and not a PPC Mac, nor an Apple silicon Mac.


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Question marked as Top-ranking reply

Nov 28, 2024 3:49 PM in response to rami.k

You can encrypt an entire storage device, or can create an encrypted sparse bundle on an existing internal or external storage volume. FileVault can encrypt some volume formats without erasing.


Encrypt and protect a storage device with a password in Disk Utility on Mac - Apple Support (see the info at the bottom of that article, too.)


Sparse bundle info: Create a disk image using Disk Utility on Mac - Apple Support


FileVault: Protect data on your Mac with FileVault - Apple Support


For newer Macs, internal storage is usually already encrypted.


I’ll assume the footer here is correct and you have an Intel Mac here, and not a PPC Mac, nor an Apple silicon Mac.


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Do I need to erase the external disk that I want to password protect?

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