November 28, 2022
Format a Hard Drive Using Mac OS X Disk Utility

Format a Hard Drive Using Mac OS X Disk Utility

Posted May 9, 2008 at 12:08am by iClarified · 408025 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.
Format a Hard Drive Using Mac OS X Disk Utility

Format a Hard Drive Using Mac OS X Disk Utility

Step Two
From the list on the left select the drive you would like to format
Format a Hard Drive Using Mac OS X Disk Utility

Step Three
Click to select the Erase tab.
Format a Hard Drive Using Mac OS X Disk Utility

Step Four
From the Volume Format dropdown select the format you would like the drive to be in.
Format a Hard Drive Using Mac OS X Disk Utility

Step Five
Enter the title for your volume in the Name field.
Format a Hard Drive Using Mac OS X Disk Utility

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.
Format a Hard Drive Using Mac OS X Disk Utility

Step Seven
You are now ready to begin the format. Click the Erase... button to start.
Format a Hard Drive Using Mac OS X Disk Utility

Step Eight
From the popup that appears click the Erase button to confirm you would like to format.
Format a Hard Drive Using Mac OS X Disk Utility

Step Nine
You will notice a status bar appear with the progress of your format.
Format a Hard Drive Using Mac OS X Disk Utility

Step Ten
Once the format has completed you will notice the disk remount in Disk Utility!
Format a Hard Drive Using Mac OS X Disk Utility
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The Don
The Don - March 1, 2017 at 2:09am
Hi, i have completed all these steps, however i can not find the external drive on the computer. Is it supposed to show up on the desktop...??
John Grooms
John Grooms - January 2, 2017 at 7:00pm
This was a total pain in the butt. I'm sending this POS back. Merry Christmas.
SLM
SLM - November 8, 2016 at 4:53pm
I went through this process when I first bought the drive and it worked. However the drive isn't showing despite the fact that it says it is mounted and has stopped working with files stored on it. When going through this process there is no option to leave data unerased and so I risk losing all my data if I reformat. Any thoughts?
TRH
TRH - September 11, 2016 at 2:12pm
I am so backwards with technology so when my seagate expansion didn't work with my mac I panicked thinking I wouldn't be able to format it.. however these instructions were fool proof. Thank you!!
TROPICAL2016
TROPICAL2016 - July 23, 2016 at 2:05pm
Yesterday I bought an Expansion Drive from Seagate and didn't notice that it was only for PCs. Since I have a Mac, the above explanation helped a lot and now my new HD is working perfectly on my Mac Pro. Many many thanks !
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