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Fotografija ljubaznošću Scott Schiller (Flickr).
Pitanje
SuperUser čitač Chris želi znati je li tvrdi disk sjećanja na loše sektore nakon formatiranja:
On an NTFS-formatted hard drive with some bad sectors, does the hard drive still remember those bad sectors after Windows diskpart clean is used to remove the NTFS volume? What if clean all is used?
Da li se tvrdi disk prisjeća neispravnih sektora nakon oblikovanja?
Odgovor
SuperUser suradnici Ben N i oštri imaju odgovor za nas. Prvo, Ben N:
NTFS remembers bad clusters. A cluster is considered bad if any sector in it is not accessible. Since the bad cluster information is stored in a specific file ($BadClus), that information will be destroyed if the NTFS volume is removed. clean and clean all are essentially the same in that regard. clean all does a more thorough job of destroying the disk’s data while clean just wipes the partition table.
Further Reading: NTFS System (Metadata) Files
The hard drive is what remembers bad sectors. Exactly how it does that depends on the model, but most modern hard drives automatically detect and remap dead sectors so that the operating system does not even know there is a problem. In that case, nothing the operating system does can affect the disk’s internal bookkeeping.
Slijedi odgovor iz oštre:
If the operating system is encountering bad sectors, then the hard drive’s internal bad block table is probably full (as Ben N pointed out) and it is time to retire the hard drive. Hard drives typically do not stop failing.
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