How to Permanently Erase Data from An External Hard Drive on Mac?

Christina updated on 2020/12/29 to Mac Data Erasure

permanently erase data from external hard drive on Mac

Summary: before you sell, donate or dispose of an external hard drive, you’d better permanently erase your private data from it. Here, download the best Mac data eraser - Donemax Data Eraser for Mac to help you securely and permanently erase data from external hard drive under Mac OS, beyond the scope of data recovery.

“Hi, I will sell my WD external hard drive and want to find a solution to permanently erase all my data on it. However, after erasing the external hard drive with Disk Utility, the files still can be found by data recovery application. Is there any method to permanently erase data from an external hard drive?” - Jessie

When you are planning to sell or donate an external hard drive, you may think you need to permanently erase all your private files in it. However, the deleted files or formatted files in the external hard drive still can be recovered by data recovery software - that’s a big security issue. To solve this issue, you need special data erasure solution. Don’t worry, we will introduce a reliable data erasure solution for you to erase an external hard drive under Mac OS so that all data in the external hard drive can’t be recovered by any data recovery method.


Donemax Data Eraser for Mac: the best tool for erasing data from external hard drive

Mac data erasure software is the best tool for you to permanently erase data from an external hard drive. Donemax Data Eraser for Mac is a safe, powerful and easy-to-use data erasure application. It can help you permanently and securely erase data from any type of hard drive or external device. Download it here:

Donemax Data Eraser for Mac offers certified data erasure methods including HMG Infosec Standard 5 (1 pass), Peter Gutmann's algorithm 2 (2 passes), U.S. Army AR380-19 (3 passes), DoD 5220.22-M ECE (7 passes), Peter Gutmann's algorithm 35 (35 passes). Once your data is erased by this Mac data erasure software, your data is gone forever, can’t be recovered by any data recovery method.


Three reliable external data erasure modes for Mac

Donemax Data Eraser for Mac offers three flexible data erasure modes for you to permanently erase data from an external hard drive.

Mode 1. Permanently shred files/folders from external hard drive.

Just add files/folders from the external hard drive to the erasure list, and click on Erase Now button. All the selected files/folders will be permanently erased. This is the best way to erase specific files/folders from an external hard drive.

permanently erase data from external hard drive on Mac

Mode 2. Wipe the entire external hard drive to erase all data.

This mode will help you format and wipe the entire external hard drive. All data information in the external hard drive will be permanently erased.

permanently erase data from external hard drive on Mac

Mode 3. Permanently erase deleted data from external hard drive.

Erase Free Space mode will erase free disk space of the external hard drive and permanently erase all the deleted data in the external hard drive. It will not affect the existing data.

permanently erase data from external hard drive on Mac

With Donemax Data Eraser for Mac , you are able to securely and quickly erase your data from an external hard drive to prevent potential data recovery. Donemax Data Eraser for Mac also can help you erase NTFS, unreadable external hard drive on Mac or repair corrupted external hard drive.

Please note that once the external hard drive is erased by Donemax Data Eraser for Mac, all data will be gone forever. Before wiping the external hard drive, you’d better make a backup in case that you would need the data in the future.

Donemax Data Eraser for Mac is 100% safe data erasure software. It will not cause any damage to your external hard drive (SSD included). It also supports to erase data from MAC hard drive, USB flash drive, memory card, digital camera, etc. Before you sell or donate your computer/digital device, you can run this Mac data eraser to permanently erase your sensitive data to avoid data leakage.


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