

If you prefer a more graphical solution, let’s look at how we can use Disk Utility to change APFS to Mac OS Extended. Once you’re sure that you have everything entered correctly, click return on your keyboard.In the screenshot below I outlined in blue where you can look for this information.

Find the number associated with yours and put it into the Terminal command. dev/disk1 is the number that the Terminal assigned to the hard drive. ExternalDrive is the name that I gave the hard drive. This will show us a list of the hard drives that are internally in our Mac and externally connected as well.ĭiskutil eraseDisk HFS+ ExternalDrive /dev/disk1ĭiskutil eraseDisk is the command that will format the hard drive.
