How to format a drive in Mac OS


Instructions for how to format your external drive so that it will be fully usable in MacOS. These steps can be used for both internal and external drives.

 Reformatting the drive will erase all data on the drive, so you should copy any data you
 want off the drive prior to formatting.
 
The following is based on the latest version of Mac OS X. However, they are suitable for Mac OS X 10.6.8 and above.
 
To reformat the drive in Mac OS X:  
 
1. Open Disk Utility
Applications>Utilities>Disk Utilities
 
2. Select the Seagate drive on the left that shows the capacity
User-added image
 
 
3. Select the Partition tab on the right hand side of the Disk Utility Window
User-added image
 
 
4. Select Partition Layout and select 1 partition
 
5. Next to name you will see untitled 1 where you can name the drive. This will be the name
    shown when the drive mounts.
 
6. Change Format to Mac OS Extended (Journaled)
 
7. Select Options and select GUID Partition Table
 
User-added image
 
8. Select OK
 
9. Select Apply
 
You will get the follow window advising you that this is a data destructive process and any data currently on the drive will be deleted
 
User-added image
 
10. Select Partition to finish the formatting process





Subscribe

Language


Did this article answer your question?


How could we make this article more helpful?