1. Hard disk logical bad sectors can be repaired, but can not repair physical bad sectors. The reality is that should be recorded into a logical bad sectors and address the physical address of record by a bad sector.
2. Bad sectors in terms of the hard drive is the "cancer" means that users find bad sectors on the hard disk into danger. The fact is, every hard disk have a certain number of factory defects are recorded track and defect sectors, some number of thousands or even tens of thousands of bad sectors to achieve, compared to track users find flaws or defects in one or two fan area is not much danger.
3. Only in the BIOS can be correctly identified under the hard disk is likely to be software repair, hard disk does not believe that no rescue, the reality is that a considerable part of the non-recognition of the hard drive can also be repaired.
4. Low-level formatting can not repair the hard disk, but may be more severe (bad sectors may be spread). The reality is, the low lattice is an effective means of repairing the hard disk.
Necessary to point out here that we often say "Bad Track" concept exactly? We know that the old hard drive as long as a previous track appears in a bad sector, the track even if the "bad track (Bad Track)", repair the whole Track all the sectors together, "Skip (skipped)". Therefore, there is no bad tracks and bad sectors separately, together known as the "bad sectors" were also more apt.
Now the hard drive of different defects (such as defects in the head. Defect track. Defect sector) have different performance, different reasons, different repair methods. If you continue to use "bad track" or "Bad Track" to summarize a variety of defects, obviously lied. So there should be more appropriate to use the concept of defects!