For example, you may have trouble logging in to your account, printing, launching applications, or even starting up your Mac. Similarly, if an application—from Apple or a third-party developer—needs access to a particular file or folder to function, and the permissions on that item have changed in a way that prevents such access, the application may not function properly or at all.
The Repair Disk Permissions function can fix such problems by ensuring that certain files have the correct permissions. Repairing permissions can resolve such issues by resetting permissions on those files to prevent unauthorized access. After launching Disk Utility, select the desired disk—generally your startup disk—in the list to the left, then click the First Aid tab.
This means that most of the files affected by the Repair Disk Permissions function are system-level files, application files, or system add-ons—not applications installed by drag-and-drop, and not your documents or other user-level files. See the next section for information about third-party software. But beyond that, only certain receipts are referenced, all of them associated with OS-X-related software. This limitation of the Repair Disk Permissions function has been debated around the Web, but you can confirm it yourself with a bit of Terminal savvy: By using the.
These receipts are explicitly listed within the code of DiskManagementTool , the component of OS X that actually performs the task of repairing permissions. You can verify this by using the following command in Terminal:. The output from that command is a list of all receipts included in the code of DiskManagementTool. For example, I changed the permissions on the file NuFile. Since NuFile. If third-party receipts were used as references when repairing permissions, a piece of malware could leave behind a receipt designed to maliciously change permissions on system-level files—for example, to assign more-accessible permissions on normally secure files and directories.
This could be a major security risk. That said, keep in mind that many third-party software products rely on components of Mac OS X. But beyond that, some receipts are necessary for the Repair Disk Permissions function to work at all, as described below. This is a good reason not to move Apple-installed software. This was true in early versions of Mac OS X. In fact, it used to be that if a permissions issue prevented you from booting off your normal startup volume, you needed to repair permissions while booted from the Mac OS X Install disc.
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Best Portable Monitors. Best Gaming Keyboards. Best Drones. Best 4K TVs. Best iPhone 13 Cases. Best Tech Gifts for Kids Aged Best 8K TVs. Best VR Headsets. Best iPad Mini Cases. Best Gifts for Cutting the Cord. Best Bluetooth Speakers. Awesome PC Accessories. Best Linux Laptops. Best Gaming Monitors. Best iPads. Best iPhones. Lets not forget mounting EFI partitions and a slew of other things that are handy to power users. I have to seriously disagree with all of the comments that claim repairing permissions does nothing.
I have seen hundreds of Macs that have been reduced to a crawl because of permissions problems, most of which look completely irrelevant at the time.
So when Macs speed up as a direct result of repairing permissions there is no doubt at all that it has an important function. To claim that Apple removed the function is to ignore the fact that they are still repaired every time a system update or upgrade is carried out. The reason? At least now the silent majority will have their permissions repaired once in a while rather than never… or until they come to see me.
Bring back the old Disk Utility please. For those saying Permissions Repair is smoke and mirror I say nay!! I highly highly doubt all those problems will magically go away in I am just a simple Mac user for many years and I love the old mac operation system, simple and extremely efficient. I just can not understand why the newer Macs have been made less functional and more undependable……..
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