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In the left-hand column under Hardware, locate the interface you are using (i.e. USB, SATA, Firewire, Thunderbolt, etc.) Obviously 4 years old and may have been recycled from somewhere or left on an OEM shelf then resold.
SEAGATE 1TB HDD - SIM Error 1002 LBA 0000000000045D8C FD
These threw out problems, and I accepted and reset, but they returned. I then went into the maintenance menu and tried short and long and fix-disk, but still had issues. The unit is quite old and therefore supply voltages may have drifted if controlled with evaporating electrolytics or something, or historically abused by one the other drives in its death throes. and lots more similar errors before and after those examples), but it did complete, and they all seemed to say 'Repaired'. I don't have anything very precise to measure them with unfortunately, especially under load and normal working.
Firmwaredownloads
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Seagate US Find Your Model and Serial Numbers | Support Seagate US
Disk problems continued, however and I ran fix-disk again but it seemed to go into an infinite loop in that it kept finding new bad sectors (like in the above messages) and resetting its count-down counter to 1520ish every time, so looked like it was never going to finish. After around 36 hours I gave up, rebooted, and ran the maint menu reformat option, deleting everything. Repeating short and cryptic messages from the diagnostic without further 'aha - that means this definitive disastrous disk condition is extant', or just pointers to useful docs or explanations, does not really move things forward.Let me know if there is anything else I can run - I will send or post any output as files unless very short.