Other important tools are commercially available for example, hard disk firmware analysis tools such as the PC3000 from ACE Laboratory, ACE have been providing us with data recovery firmware analysis technology since 2002 and their software is the flagship of firmware analysis and repair, they also provide the 'data-extractor' add on for the PC3000 which is advanced hard disk imaging software that enables the best possible recovery. Imaging by head on all makes of drives, selective data imaging for most operating systems and advanced control of bad media. Owning the equipment is a small part of the process, having an understanding of hard disk firmware is absolutely vital. We have received many drives where incorrect firmware 'fixes' have rendered a drive inoperable. Most of them we have been able to repair, but sadly, not all.