Use Apple’s Disk Utility, select your boot drive, then choose the First Aid tab (if necessary) and click Repair Permissions. Apple is aware of this and provides a way to Repair Permissions that restores defaults and fixes many problems. They can also cause problems with OS updates.
While noble in intent, incorrectly set file permissions can sometimes prevent you from launching applications or saving files. The Ownership & Permissions area shows who can do what with that file. The easiest way to view or set a file’s permissions is to select the file (or folder) and choose Get Info in the Finder (File –> Get Info, or Cmd-I). This security helps prevent you from modifying special system files you shouldn’t change and prevents other users from seeing the files inside your Home folder when you share a machine. Repairing File Permissionsįile Permissions are security settings that permit or restrict access to files and folders by different users. If you’re booted in Mac OS 9, restart the Mac while holding down the Command (Apple) and Option keys (Cmd-Opt) simultaneously until you are asked if you want to Rebuild the Desktop. For Classic Users running Mac OS X, use System Preferences –> Classic –> Advanced tab to rebuild the desktop. Rebuild the Desktop (Classic Mac OS)įor Mac OS 9 and Classic users, Apple’s Rebuild Desktop routine can help fix problems opening files in Mac OS 9 applications. Apple’s Disk Utility has a Repair Disk function that sometimes gets you going – you can restart from your Mac OS X Install CD/DVD and run Disk Utility to fix your startup drive.Īt a more sophisticated level, TechTool Pro and Drive Genius let you test for various hardware damage and try to repair errors both also come on a bootable CDs or DVDs. Other disk utilities are worth trying when DiskWarrior doesn’t help. Replace your existing directory when the process is complete, then restart normally to see if your problem is fixed.
When DiskWarrior is ready, select your startup drive and click Rebuild Directory. You will need to restart your Macintosh from the DiskWarrior CD to fix the internal hard drive. Directory Damage or Your Mac Won’t Boot Create a Fresh New DirectoryĭiskWarrior is my tool of choice to fix directory related problems.
Fixing the disk directory and boot blocks often helps resolve these kinds of problems. Such errors can cause problems opening or saving files, and if severe enough they can prevent your Mac from starting up, instead displaying the flashing question mark. Directory errors build up slowly over time – or quickly after a crash. The disk directory is the table of contents for your hard drive.
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