How to password protect a folder in macOS Mojave?

Hi,


I tried to password protect a folder using Disk Utility in macOS Mojave, but then I encountered an error like this:



The folder in question only contains 7 highly-sensitive photos, it's only a test to see how easy and fast macOS do it, but the result is dissappointing.

I chose 128-bit encryption, and use a simple pass-phrase (it was only a test).


Did I do it wrong?

MacBook, macOS 10.14

Posted on Sep 20, 2020 11:11 PM

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3 replies

Sep 21, 2020 1:13 AM in response to andy js

Hey there! I’m honestly not sure if encrypting folders via disk image like this are still supported like they were.


I know you can adjust the permissions of any file or folder being an admin of course:


https://support.apple.com/guide/mac-help/change-permissions-for-files-folders-or-disks-mchlp1203/10.15/mac/10.15


And/or lock PDF’s using Preview or even other file types with other apps, such as Notes. (And then the general “Lock” option for any file of course.


This was some years ago, but maybe this might have some insight:


https://discussions.apple.com/thread/7635621


All the best!

Sep 21, 2020 3:14 PM in response to andy js

While you can try to make one from the folder, it will be only as large as the current folder (plus a little more).

If you need an image that can expand in size, create a new disk image as desired, then move the files into the mounted disk image.


As BDAqua suggests, there is something that is using whatever you are trying to copy. It should be just making a copy, so I don't know what would be using the resources.

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How to password protect a folder in macOS Mojave?

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