I crashed Disk Director 9 while changing cluster size. How to recover?

I bought an external Western Digital 1TB usb HD that comes formatted as FAT32. I copied 200GB of data to it. Then using D.D.9, I chose to change the cluster size from 32KB to 4KB. After some minutes, the system seemed to stop working, so I switched my pc off. Now I realize that the system might have been busy working, and that I should have waited. Anyway, now I have the hd that is broken, meaning that a part seems to be at 32KB and a part seems to be 4KB. If I chkdsk almost all files have errors. The best solution will be to create a new partition ex novo, and I will do this. But, I am curious to know if there is a way to recover the situation.

Thank You very much

Rodolfo Giovanninetti

 

I don't think there's any way to return the drive to its previous state unless you created an image backup before you started (this is always highly recommended before beginning any partitioning procedures).

It's possible that data recovery software may be able to scan the drive and recover some of your files. However, because of the type of corruption and the fact that you ran chkdsk on it, you may not get much.