The most severe form of corruption that an SSD can experience due to power interruption is controller firmware data corruption. User data and system level data corruption will cause down time and can be field serviced, but firmware corruptions will render the SSD inoperable. The firmware is stored in the NAND Flash memory, but during mounting and specific routines, portions of the firmware are loaded to controller’s internal volatile cache. It is during this event that the firmware can be the most vulnerable and be susceptible to firmware critical operational file(s) corruption during a power interruption. When these firmware critical files are corrupted, the drive would become inoperable and would require to be reprogrammed with firmware. Reprogramming the SSD firmware can only be done by the manufacturer. Reloading the firmware will refurbish the drive to original factory settings and hence, erase all user data.

