Now hardware is another topic to be considered. The process to of file recovery differs somewhat depending on the device you hope to recover deleted files from. In fact there is a definite hierarchy as to the difficulty involved. When one wants to recover deleted files, Flash drives are probably the easiest device to access. Being solid state there is seldom a physical problem with the storage media. When wanting to recover deleted files, flash drives that are in working order are much less of a problem than an older disk drive. And the software required to recover deleted files from external drives is far less sophisticated than that used for general data recovery. However if one is going to the expense of purchasing file recovery software why not buy a program that can facilitate any kind of recovery?