Formatting a drive may overwrite old file system
information but the data may still exist on the drive.
A hard drive may have been
reformatted multiple times over its lifetime. Therefore, common data
recovery tools may retrieve multiple past file systems and many older
files.
Multiple formats may affects the “alignment” of
data with the proper file system during a recovery. The recovery tool
may attempt to pair an older file system with newer data. This results
in an unusable data recovery.
