How to recover data and partition after diskpart clean

While installing Windows 10 from the Repair Tools command prompt, I ran clean command by mistake on the whole disk, so it becomes a single 465GB partition. Previously, it contained four partitions.

How can I recover them with the data intact?

Solution 1:

Assuming you haven't made any more writes to the disk, I believe TestDisk should easily be able to fix this for you.

Just in case something goes wrong or if this otherwise does not work, I would advise you first take a raw image of the disk's current state, so you can roll back your changes and not put your data at any more unnecessary risk.