Got a problem with a Seagate 7200.12 ST500DM002 JC4B firmware. Drive spins up and sounds fine but is not recognized. Drive is only several months old, PCB looks pristine, no corrosion or visible burn damage, has not been dropped. Thought this might be a BSY error similar to the 7200.11 series but when connected to terminal and powered on drive only reports:
Rst 0x10M
RW: Disc Ctlr Initialization Completed.
(P) SATA Reset

No response to CTRL-Z, no terminal access.

Any ideas or suggestions?

Thanks