I have a 1 TB external hard drive which is often used for data backup. Yesterday, I accidentally ejected it from my computer without following proper procedure. After that, I was not able to access files on it, when I connected it back into my PC, it displayed "You need to format the disk in drive *: before you can use it. Do you want to format it?". I think my external hard drive is corrupted due to accidentally ejected. Can you tell me how to recover data from external hard drive? Thanks.

External hard drives are widely popular for their large capacity and portability. However, according to a data recovery company survey, external hard drives account for the largest share of data loss incidents. If you're facing this type of disaster, don't panic—finding a free data recovery solution becomes your top priority. That's where Hasleo Data Recovery comes in. This free software can recover data from formatted, corrupted, erased, dead, or undetected external hard drives with ease.
Download, install, and run Hasleo Data Recovery. On the main interface, select Deep Scan Recovery mode.

Select the external hard drive where you lost your files, then let the software scan it. The scanning process may take some time, depending on the drive's capacity.

Preview the recoverable files, then select the ones you need and click "Recover".

As a professional data recovery software, Hasleo Data Recovery can recover data from a formatted, erased, dead, broken, or not detected external hard drive.
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