When you delete a file, the data isn't immediately erased. Instead, the space it occupies is marked as "available." If you download and install software onto that same drive, you risk overwriting the very data you are trying to save. Why use a portable version? It runs directly from a USB flash drive.
You formatted a drive but haven't written new data. This rebuilds the file system headers. Result: 80-90% success. recover my files portable full
Select the physical drive or partition that contained the lost files. Step 5: Scanning and Previewing When you delete a file, the data isn't immediately erased