Reset default permissions mac os x

ARCHIVED: Using Mac OS X, how do I repair permissions, and what does that do?

At this point, you may think you need to run Disk Utility's First Aid , which can repair file permissions. The problem, as silly as it sounds, is that Disk Utility only repairs drive permissions on the system files located on the startup drive. It never accesses or repairs user account files.


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With Disk Utility out of the picture, we must turn to another method of fixing user account file permissions. But while Permissions Reset can fix a file or folder of items, it's not a great choice for something as large as a home folder, which contains many different files with different types of permissions.

A better choice, if a bit more cumbersome, is Password Reset, another utility that is built into your Mac. In addition to resetting a forgotten password, you can also use Password Reset to repair file permissions on a user's home folder without actually resetting the password. Since the way to use Password Reset changed with the introduction of Lion, we will cover both the Snow Leopard If you're using FileVault 2 to encrypt the data on your startup drive, you will need to first turn FileVault 2 off before proceeding.

You can do this with the instructions at:. Once you complete the process of resetting user account permissions, you can enable FileVault 2 once again after you restart your Mac.

Locate your OS X install disk and insert it into the optical drive. Restart your Mac by holding the c key while it is booting up.

This will force your Mac to start from the OS X install disk. The startup time will be a bit longer than usual, so be patient. When your Mac finishes booting, it will display the standard OS X installation process. Select your language, then click the continue or arrow button. Don't worry; we won't actually install anything.

Mac Troubleshooting - Reset User Account Permissions

We just need to get to the next step in the installation process, where the Apple menu bar is populated with menus. In the Reset Password window that opens, select the drive that contains your home folder; this is usually your Mac's startup drive. The process may take a while, depending on the size of the home folder. Eventually, the Reset button will change to say Done.

The application that is used to reset passwords and user account permissions is still present, however; you just have to start the app using Terminal. Start by booting from the Recovery HD partition. Keep holding the two keys until you see the Recovery HD desktop appear. You will see the OS X Utilities window open on your desktop, with various options available in its window. You can ignore this window; there's nothing we need to do with it.

For system installed packages you can run the following command in Terminal. If you want to just apply those permissions to your system as a whole, run the following command:. For everything else, you need to have used either a package manager that can verify permissions, or have a backup you can use for comparing permissions before and after the event. Follow the step below to changed the folders No Access permissions and revert back to Allow access:.

Restart with the Command and S keys held down, and run the following commands:. After the last command "exit" your system should restart on its own and everything should appear the same as the time before you changed the Home folder permissions. By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies. Home Questions Tags Users Unanswered. How to reset to default permissions Ask Question.

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Firdous Firdous 1 4 6. Yes, I'm aware that it only shows the changes.

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This was intentional as the user did manually change some permissions, so I assumed he would be able to tell afterwards which of the changes were due to his own actions, and which were already changed before he did his thing. But I'll include it in the answer! It depends on your OS. Yosemite Use Disk Utility to reset System permissions. A Reset Password window opens.

Click the Reset button at the bottom of the window in the Reset home folder permissions and ACLs section. Quit the Password Utility and go back to the main recovery screen. It's very important that you don't hold down the power button to exit the recovery session, or the ACL reset won't be performed. Tetsujin Tetsujin