If your Apple computer is used by multiple people or you have personal information that you don’t want other eyes to see, it may be beneficial to password protect or lock that file so that it can’t be deleted, moved or opened by other people.

1. Locate the folder or file you want to lock and press the key combination Command+I. This new pop up box will show you the INFOS about the folder/file

2. At the bottom where it says Sharing & Permissions, click the arrow to show this information

3. Click the padlock on the bottom right corner of the window and enter your administrator password

4. You now have given yourself the ability to change who is able to access or move this particular file or folder on your computer. Change Privileges to Write only (Drop Box). After you have done so, click the lock again to prevent any further changes.

5. Finally, you will want to check the Locked check box located under the General area in the Get Info box. This will prevent the file or folder from being able to be deleted or moved

 

6. To unlock a file or folder, just follow these instructions backwards.