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News

Mac OSX Tutorial: Repair Disk Permissions

When you next have a strange glitch that a restart does nothing to improve, the next step might be to repair your disk permissions

Even in an operating system as stable as OS X, odd things can still happen every now and then, like a preference not ‘sticking’, or a folder refusing to open.
Although most minor niggles can usually be solved by a force-quit or a restart, it could be that an incorrect disk permission setting might be the cause.
Originating from OS X’s UNIX underpinnings, disk permissions dictate who is allowed to do what with each file or folder on your Mac’s hard drive. You as the administrator might have widespread access to read to and write from all files on your system, whereas a guest or a non-administrator account might be denied the ability to make changes to certain files.
While permissions exist primarily as a safeguard, they can sometimes cause issues when your system comes across a setting that is not what it thinks it should be. Luckily, repairing permissions is a simple process, and we demonstrate how to do it right here – with your permission, of course!

1: Open Disk Utility
The Disk Utility application used to repair disk permissions is found in your
Applications>Utilities folder. A handy keyboard shortcut to open this folder
quickly from within the Finder is Shift+Cmd+U.


2: Select drive

On the left side of the main window you’ll see a list of the drives attached to your
system. Click on the name of the drive you want to repair permissions on.


3: First aid

Click the First Aid tab at the top of the screen if it is not already selected. This brings up
the various available disk repair options.


4: Repair permissions

Click the Repair Disk Permissions button, then put the kettle on while the disk is scanned
for inconsistencies. It can take a while, depending on the size of your disk and how full it is.

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