By using a full format you are telling the drive to test (and reallocate if necessary) every sector. By formatting the drive you are telling the drive's internal controller that none of the sectors are in use. If the data from your E: drive is backed up elsewhere then a good test would be to perform a full format (not a quick format) on E. So far it has continued to work perfectly and has not developed any more bad sectors. I have a machine with just one reallocated sector on its (only) HDD that has been there to my knowledge for the last two and half years. It could be an early warning sign, or it could go on for years without developing any more reallocated sectors. Should you continue to use it? Well, that very much depends on how important to you is the data you keep on it. When no longer in use it will be tested by the drive's internal controller and either reallocated or, if found to be good, removed from the 'pending' count. A pending sector is one that may need reallocating, but is in use at present. A count of more than 100 would be fairly conclusive evidence, particularly if the Reallocated Sector Count or the Current Pending Sector Count increase with time. How long it will stay that way is difficult to say.Ī reallocated sector is a sign that the drive may be dying, but just one reallocated sector is not sufficient to condemn it.

Having replace a faulty sector, the drive should be full functional (for now).

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