I recently installed a firmware update on a Seagate Momentus (ST9750420AS) drive and everything looked fine. But after rebooting the BIOS can’t see it. The drive simply spins up and gives two long chirps. Is there any way for me to restore the older firmware? I’ve never messed with a hard drive PCB (Printed Circuit Board) before but I found an identical one here that got me wondering, is the firmware on the PCB? If so, would replacing the PCB revive my drive?
To troubleshoot I put it in another machine with the same results. It’s a Dell machine and I installed the update from Dell, plus I’ve verified the disk’s model number.