Can't erase unused disk space..

[artazzz123]

Hello,

I have stumbled upon this issue:

I have tried to delete unused disk space on my internal data storage drive (my main drive and storage drive are connected via AHCI). I used 1 pass of DoD following by 1 pass of Pseudo erasure. After that, I tried to see if I am able to recover any data using R-studio, and to my surprise I was able to recover 100% of it. What could the problem be? Am I doing something wrong?

Thanks

P.S If it helps in any way, my main drive is SSD and the storage is a regular 1 TB HDD.

Edit: I tried one more Pseudo erasure, what I noticed was happening is that the Eraser fills my HDD completely with 221 mb files (about 200gb of them) and after that the process finishes in about 2-3 minutes, removing the created files.

 

[garrett01]

On an SSD drive eraser cannot be used to wipe individual files and there is no guarantee the same blocks are written to as the ones read from.
The free-space erase should clear the data from the empty parts of the drive but note: on an SSD one pass is enough and be aware that over provisioning could lead to some data remaining.

Are you certain R-Studio recovered actual valid files and not artifacts? I'd be interested in more test results.