We often store important files—such as documents, photos, emails, videos, and audio files—in a partition on our computers for easy access. How would you feel if you accidentally deleted that partition and lost those files? For those without any backups, this could be a disaster. Is there a way to recover those precious files you've kept for years? The answer is yes—but first, it helps to understand why recovery is possible.
When you accidentally delete a partition in Windows 10, 8, 7, or XP, the data stored in that partition is not immediately erased. Physically, the space remains on your storage device as long as you do not create a new partition in the unallocated space and write new data to it. Instead, the space that was originally occupied by the deleted partition is simply marked as available for reuse. This is the fundamental principle of data storage, which is why a deleted partition can still be recovered. This article explains how to restore data from a lost or deleted partition using professional Partition Recovery Software.
Download, install, and run Hasleo Data Recovery. On the main interface, select Deep Scan Recovery mode.

Select the unallocated disk space from which you lost or deleted the partition, then click Scan to search for lost files. The scanning time depends on the hard drive capacity.

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

We suggest stopping using the disk where the partition was lost or deleted. Continued use may overwrite the original data and permanently destroy your chances of recovery.
Important Notes: