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A friend of mine who knows computers inside and out, recommends running the OSX Disk Utility at least once a week. At first I thought this was silly, but I'm beginning to think he knows from whence he speaks.
The Disk Utility has two purposes. It lets you find and repair disk permissions and it lets find and repair hard disk errors. When your hard disk isn't healthy, it adversely affects performance in a big way.
The other day I ran the disk utility and was shocked to find major errors in my disk permissions. I fixed them, then ran the disk repair and it found a major error. The error seemed minor enough to me --the number of directories it was supposed to find was off by one number. It found 174,101 files and it was expecting 174,102. To the Disk Utility this was a major error highlighted in red to make you take it seriously. It recommended I run the repair feature.
The trouble is that you can't run the Disk Utility Repair feature from the active disk. This means you need to insert your OSX install disk and run it from the Install Disk.
Follow these steps to run Disk Utility from your Install Disk:
- Insert your OSX Disk. It needs to be the version you are running, so if you are running Snow Leopard, it has to be the Snow Leopard Install Disk.
- Restart your computer.
- When you hear the musical chime, press and hold the letter C on your keyboard.
- When the Install screen appears, click the Utilities menu and select Disk Utilities.
- Click Verify Disk. Note this takes about 20 minutes for a 160 GB hard drive.
- After the Verify process is complete, note the errors. I got the exact same ones as when I ran it directly from the hard drive, so I knew it was serious.
- Click Repair Disk. Again, this will take about the same amount of time as the Verify process. When it's finished, you should get a message (in green) that the errors were repaired.
- Run the Disk Permissions process one more time.
- Reboot and when your system boots, remove your disk.
After I did this, I was pleased to find my computer is suddenly dead quiet. Instead of hearing constant action on my hard drive, I hear nothing. It is silent and my computer is running much more smoothly. So take my friend's advice and run that disk utility once a week. It takes time, but you'll be glad you did.
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