How to recover lost data from my external hard drive?

Its a WD 2TB external hard drive and Windows says my external hard drive unformatted,I can not read my files.

Aidfile can recover data from external hard drive

Use “unformat” to recover data from formatted external hard drive quickly if the partition can be recognized.

Use “Recover partition”  to >recover data from lost partition of the external hard drive.

Use “Full Scan” to scan the whole 2TB external hard drive.