Mac disk rights fix what's the use

　　Why disk privilege Repair is required

　　In the user's daily operation, and some applications or plug-ins in the process of installation and uninstall, will inevitably be some of the specific files and folder changes. For example, when you install or uninstall some of the applications (usually the PKG format of the installation package), will be some of the user-writable files into anyone can write or everyone is not writable state, resulting in the file can not be accessed later or the application does not have permissions to rewrite. In most cases, these abnormal permissions do not have any inconvenience to your daily use, but occasionally lead to application or system exceptions.

Because different files and folders have their own different permissions, and some may have an impact on you are not, in your daily application installation and uninstall process will inevitably occur permissions changes, so occasionally repair Disk permissions is quite necessary. You may want to consider adding this task to your system's unscheduled maintenance list, but be careful not to expect disk privilege fixes to make your Mac run faster, because this usually doesn't affect you very much.

Finally, no matter what version of the system you run, even Yosemite, mavericks, mountain lion or older tiger, Snow leopard, and so on, regardless of the normal system, repair system, Single-user mode, The methods and procedures for disk rights fixes are the same.

　　How to Repair Disk permissions:

　　Use the system's own disk utility to repair Disk permissions

This step fixes all the exception file and folder permissions found on the destination disk, whether you're using a boot disk, a removable hard disk, or something else.

First turn on the system's own disk tool (diskette Utility) application, under the _/applications/utilities_ folder

In the left menu bar, select the destination disk for which you want to repair permissions

On the right, select the "Repair Disk Permissions" (Repair disk Permissions) button, waiting for the repair progress to complete, depending on the size of the hard disk repair speed is also variable

In the above window you will be able to tell you a variety of information about those permissions exception files or folders have been repaired, the approximate information is similar to the following:

Permissions differ on "applications/. Ds_store "; Should be-rw-rw-r–; They are-rw-r–r–

Repaired "applications/. Ds_store "

Group differs on "library/printers/ppds/contents/resources"; should be 80; Group is 0.

Repaired "Library/printers/ppds"

When you're done, you'll see a "Permissions repair complete" message, and if you have more than one hard drive on your Mac, you'll need to fix the permissions once for each hard drive.

　　Use Disk Utility for permission validation

In fact, the permission to verify the steps are not needed, because in the process of your repair, you will first verify that the wrong files and folders will be repaired, and if the first verification, the second step to repair the time or need to verify again. But if you just want to know that there are problems with the files and you don't want to fix them, use this (but I don't think anyone should). The steps are the same as before, except that the "Verify Disk Permissions" (Verify diskette Permissions) button is finally clicked. The message that is prompted will only tell you the wrong place and the permissions that you should have, without actually fixing the permissions on the files and folders.