With TSK, we could find and recover the deleted files. These deleted files still have their information in the metadata area, which is why we could identify their information and know their location in the data area. This leaves us with a simple step to recover these files by redirecting the contents of each file to a new file. What if there are no entries for the deleted file, and we only have the contents of the file in the data area and no metadata about this file (which under this assumption will be in the unallocated area of the hard drive)? In this case, the file carving technique will be useful to recover such files.

Each file has a different type, such as Microsoft Office, Adobe, exe, and AVI. The extension at the end of the filename is not what is needed to differentiate between one file type and another. There is a header in the beginning of each file which differs from one type to another. Some file types have a footer in the end of the file, but this is not mandatory...