External hard drive, as its name suggests, is a frequently used external device to store files and some of them are Firewire external hard drive, USB external hard drive. For the first time you used your external hard drives, it has gone through low-level formatting by the manufacturer. Then the later formatting is quick formatting or full, sometimes called complete formatting. Sometimes, you may accidentally reformat the external drive or it has errors and asks you to reformat the drive and you did.
When the PC receives the order of formatting, be quick format or complete format, it seems that everything on the drive has lost and Windows does remind you the data loss notice before performing the formatting. In fact, quick formatting and complete formatting only rewrite the file allocation table and mark your old files to be empty place to accept new data but they are actually still there.
Here professional unformat software - EaseUS Data Recovery Wizard Free Edition is what we need, let's learn how to unformat external hard drive with this free unformat software.

1. Download and install EaseUS Data Recovery Wizard Free Edition.
2. Connect your drive to the computer and run EaseUS Data Recovery Wizard Free Edition, which will let you select the formatted drive to recover files.
3. Preview lost files and save lost files into other place.
Thanks for visiting EaseUS, please share your data recovery experience with us, which will help us improve this article and make it more useful to others. Should you need technical support please feel free to contact support@easeus.com.
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