#Itunes you do not have enough access privileges for this operation mac mac os x#
When you use Apple’s Installer utility to install software (such as Mac OS X itself or an OS X update), the installation package (theįile you double-click to begin installation, or that Software Update downloads in the background for an automatic installation) generally leaves behind a How does the Repair Disk Permissions function know what the “correct” permissions are? It’s useful if for some reason Disk Utility itself won’t launch, or for repairing permissions on a remote Mac when connected via Remote Login (SSH), but otherwise you’re just as well served using Disk Utility. However, it’s unlikely that the typical user will ever need to perform the task in this manner. Permissions can also be repaired via the shell (Terminal) by using the command Repairing permissions can resolve such issues by resetting permissions on those files to prevent unauthorized access. If the permissions on certain system-level files somehow get changed so that access to those files is no longer restricted, you’ve got the potential for a major security issue.
There’s also a security element here: Many system-level files have permissions set a particular way so that applications or users that shouldn’t be meddling with those files can’t. The Repair Disk Permissions function can fix such problems by ensuring that certain files have the correct permissions. 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). For example, you may have trouble logging in to your account, printing, launching applications, or even starting up your Mac. If permissions on particular files are “incorrect”-i.e., not what Mac OS X expects them to be or not what they need to be for your Mac’s normal operation-you can experience problems when the operating system tries to access or modify those files. Why is it necessary to repair permissions? (In Mac OS X 10.3 and later, repairing permissions also performs one other, unrelated, task: If the invisibleĭirectory-is missing, the link will be recreated.) The Repair Disk Permissions function-the process that actually performs the task of repairing permissions-examines certain files and folders on your Mac’s hard drive to see if their current permissions settings are what Mac OS X expects them to be if discrepancies are found, the offending permissions are changed to match the expected settings. (Brian Tanaka offers more details about various types of permissions in But permissions also determine which items the operating system-or specific parts of it-can access and modify, and which files are accessible by applications. For example, permissions dictate whether or not a particular user can open and edit a particular file. settings that determine which user(s) have access to each item, and exactly what that access is. Every file and folder on a Mac OS X hard drive has a set of
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