![]() ![]() BUT if the data are wrong, or the signals from the heads are weak, the system attempts to re-read that data to get a good copy (if possible), then marks that Sector as poor and NEVER to be used again, and replaces it with a good sector from a stock of spares. If they are all strong and give correct data, it simply goes on the the next task. When you write to a HDD sector, an internal operation that is part of the HDD's own programming will then read back what was written and evaluate the signals. ![]() That in itself may not matter much to you. Why? Well, that operation writes just zeroes to EVERY sector of the HDD, thus over-writing all data so it is very hard (impossible for an amateur) to recover any old data. I would recommend that you Zero-Fill that old HDD. I think there's third option that is best. Formatting won't do what you want, really, but re-Partitioning it will. ![]()
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