Format a Hard Drive Using Mac OS X Disk Utility

Posted May 9, 2008 at 12:08am by iClarified | Please help us and submit a translation by clicking here | 184975 views

These are instructions on how to format a hard drive using Mac OS X Disk Utility.

Step One
If your hard drive is an external drive, connect it to the computer. Launch Disk Utility from the Applications:Utilities folder.




Step Two
From the list on the left select the drive you would like to format


Step Three
Click to select the Erase tab.


Step Four
From the Volume Format dropdown select the format you would like the drive to be in.


Step Five
Enter the title for your volume in the Name field.


Step Six
Press the Security Options... button to specify how to erase the drive. You can choose: Don't Erase Data, Zero Out Data, 7-Pass Erase, or 35-Pass Erase. Click the OK button to continue.


Step Seven
You are now ready to begin the format. Click the Erase... button to start.


Step Eight
From the popup that appears click the Erase button to confirm you would like to format.


Step Nine
You will notice a status bar appear with the progress of your format.


Step Ten
Once the format has completed you will notice the disk remount in Disk Utility!

Share
Add Comment
Coleman - November 28, 2014 at 11:08pm
I tried and tried to get this working - wasn't letting me unmount the drive, but found a post on Apple forum (from Kappy) that gave a command from terminal to stop Spotlight from using the disk. (Spotlight indexes the external drive and so disk utility couldn't unmount the drive to reformat until I turned that off). The link to the post is https://discussions.apple.com/message/24587681#24587681 - in case it helps someone else... THANK YOU
Di - November 13, 2014 at 6:38am
The BEST advice on doing this. Thank YOU!!!
Meagan - October 28, 2014 at 6:38am
I have been trying to do this for about 2 hours until I stumbled across your post - thank you! The easiest and smoothest way by far.
carlos1777 - October 10, 2014 at 7:09am
THANK YOU SO MUCH!!!!!!!!!!!!!!!!!!!!!! I am one very happy girl, now i can watch my tv shows all night :)
Margaret Brown - August 18, 2014 at 9:04pm
Clear, simple and precise and the screen shots helped a lot. Many thanks.
13 More Comments
Follow iClarified
Apple Increases App Prices in the Russian App Store
Apple has informed developers that it's incre...
Brushstroke is Apple's Free App of the Week
Apple has selected Brushstroke for iOS as its...
Bank of America Airs New Ad for Apple Pay [Video]
Bank of America aired a new ad for Apple Pay ...
Ship Times for iPhone 6 and iPhone 6 Plus Improve to as Little as 1 Business Day
Amazon's New 'Amazon Prime Now' App Offers One Hour Delivery Times in Manhattan!