Two Ways to Format External Hard Drive/USB Drive under macOS 10.14 Mojave

"Hi, is there any way to format an external hard drive in macOS 10.14 Mojave? I will sell an old external hard drive, I want to format the external hard drive on my Mac and remove all data." – Maris

Many Mac users send us emails and ask how to format external hard drive, USB flash drive on Mac after they install macOS Mojave in the Mac. If you are also looking for a solution to format external hard drive/USB flash drive in macOS 10.14 Mojave, you just come to the right place. In this article, we will show you two solutions to help you easily and securely format external hard drive/USB flash drive under macOS Mojave.

Two solutions to format external hard drive/USB flash drive in macOS Mojave

There are two solutions to help you format external hard drive/USB flash drive in macOS Mojave. Two tools: Disk Utility and DoYourData Super Eraser for Mac can help you securely format external hard drive/USB flash drive under macOS Mojave. Here, you can choose one of the solutions to help you format external hard drive/USB flash drive under macOS Mojave 10.14.

Solution 1: format external hard drive/USB flash drive in macOS Mojave with Disk Utility

Disk Utility is a traditional Mac disk tool. It can help you format external hard drive/USB flash drive after you upgrade your Mac OS to macOS 10.14 Mojave. Just run this app from Launchpad and use it to erase the external hard drive/USB flash drive. It will format the external hard drive/USB flash drive and remove all data on the external hard drive/USB flash drive.

But, please note that the formatted data on the external hard drive/USB flash drive can be recovered by data recovery software after you format it with disk utility. If you want to format external hard drive/USB flash drive in macOS Mojave and permanently erase the data on the external hard drive/USB flash drive, just try solution 2.

Solution 2: format external hard drive/USB flash drive with DoYourData Super Eraser for Mac

DoYourData Super Eraser for Mac is powerful data erasure software for macOS 10.14 Mojave. This is the secure tool to format external hard drive/USB flash drive and permanently erase data in macOS Mojave. Here, you can follow these steps to format external hard drive/USB flash drive in macOS Mojave with DoYourData Super Eraser for Mac.

Step 1: Download and install DoYourData Super Eraser for Mac.

Download and install this software on your Mac. It is fully compatible with macOS Mojave. Then run it from Launchpad.

Step 2: Choose mode "Wipe Hard Drive".

Run DoYourData Super Eraser for Mac on your Mac. Connect your external hard drive/USB flash drive with your Mac. Then choose this data erasure mode – "Wipe Hard Drive".

Step 3: Wipe and format external hard drive/USB flash drive.

Select the external hard drive/USB flash drive and click on "Wipe Now" button. DoYourData Super Eraser for Mac will format and erase the external hard drive/USB flash drive.

Please note that once the external hard drive/USB flash drive is formatted by DoYourData Super Eraser for Mac, all data information on the external hard drive/USB flash drive will be permanently erased, can’t be recovered by data recovery software.

The two tools above can help you easily and securely format external hard drive/USB flash drive on macOS Mojave. If you are going to sell, donate or abandon your external hard drive/USB flash drive, we strongly recommend you to use the solution 2 to format your external hard drive/USB flash drive.