18Nis
EEPROM with HDD calibration data
I understand that in a Hard Disk Drive (HDD) there is EEPROM which stores calibration data. This is not directly accessible by any ring-3 (usermode) or ring-0 (kernel mode) programs.
I was curious as to whether changes to the HDD, such as by writing files in a particular order, or doing any other operations, could indirectly cause information to be written onto the EEPROM. Perhaps purposely writing a block in such a way that it appears to be corrupted, so that the EEPROM stores this in the calibration data?
This could be a secret message, which is why I tagged this question as steganography, as it is a less likely searched for place.
This question is not about Solid State Drives (SSD), nor about hardware hacking which is beyond the scope.
