The question of how often one should repair permissions is a hotly debated topic. In fact, it's likely a very rare case when this will actually address your problem, which is why I typically take the "when all else fails" approach. How Often Should You Repair Permissions?ĭespite the anecdote above, repairing permissions really isn't the end of your problems with OS X. If permissions problems are found, you can click "Repair Disk Permissions" to have your Mac automatically fix any of the issues it can find. The First Aid tab allows you to verify and repair permissions From here you can click "Verify Disk Permissions," which will run a check to see if there are any problems. To do this, click on a disk and then select the "First Aid" tab near the center of the window. When you "repair disk permissions" you're essentially telling your system to take a look at that secret receipt and fix any files whose permissions don't line up with what they should be. Over time, various installations, un-installations, upgrades and the like can wreak havoc on the permissions of certain files. When many things are installed, OS X writes a secret file in /Library/Receipts that tells the System what the permissions should be. Certain user accounts have different access privileges to certain files. So what are disk permissions, why do they get screwed up and how do you fix them? The simplified answer is that OS X automatically assigns various files on your computer an owner and further decides the level of interaction other users are allowed to have. Mac users that have been around for a while have a saying, "When all else fails, repair disk permissions." This action is viewed as a sort of a magic cure all that addresses all types of various untraceable issues. For that, you'll need a third party utility like DaisyDisk.įixing Disk Problems with Repair Permissions Unfortunately, Disk Utility won't give you a breakdown of how this storage is being used.
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