Usually, the hard drive electronics will not notice the problem during writing but when attempting to read data from the damaged spot. The coating can have a weak spot or other kinds of damage can develop over time due to thermal cycling, shocks or entry of dust or condensation into the enclosure. This SMART metric is only present in classical hard drives that record data magnetically on spinning discs (called "platters") that are coated in a material suitable for the purpose. To provide some additional information on the question in the title: Cause Sectors that consistently fail only after some time has passedįollowing a successful write operation, then the drive will never This is a serious shortcoming, for if such a drive contains marginal Sector and if the write operation is successful then the sector willīe marked good (in this case, the "Reallocation Event Count" (0xC4) Written instead the drive will first attempt to write to the problem However some drives will not immediately remap such sectors when Known, and also it might become readable later) instead, the driveįirmware remembers that the sector needs to be remapped, and will Read errors on a sector will not remap the sector immediately (since the correct value cannot be read and so the value to remap is not If an unstable sector is subsequently read successfully, the sector is remapped and this value is decreased. Attribute: Current Pending Sector CountĬount of "unstable" sectors (waiting to be remapped, because of unrecoverable read errors). Degradation of this parameter may indicate imminent drive failure. Please also consult your machines's or hard disks documentation. Restore the data, transfer it to the reserved disk area (spare area) Still occur when reading some sector, the hard drive will try to These sectors are read successfully, the value is decreased. Total number of sectors waiting for remapping. The raw value of this attribute indicates the parameter is a critical parameter and indicates the current count of unstable sectors Attribute: Current Pending Sector CountĬurrent Pending Sector Count S.M.A.R.T. Keep an eye on this value and see if it increases. You should back up this disk as it could fail at any moment. This is a "Potential indicator of imminent electromechanical failure" (row coloured pink in S.M.A.R.T.). What is Current Pending Sector Count and should I worry about it? parameters are not marked as warning / dangerous / caution, of they're also above threshold? What am I missing or how should I read CrystalDiskInfo reports? Why other S.M.A.R.T. virtually every parameter, that program has analysed is above threshold and yet only one is marked with yellow color to bring my attention. I can see, that my disk results in "caution" health status, but what really surprises me is that. either I'm stupid or I completely don't understand results, that it brings to me. Thus, after reading of this article I downloaded portable version of CrystalDiskInfo 6.7.5 圆4 and. I browsed through this and this questions and answers, but found no reliable answer, as both of them are asking about sectors already listed in summary as damaged. My USB disks keeps showing (after each Check Disk pass) keeps informing me about new clusters added to Bad Clusters File:īut it does not list them as " damaged sectors" in disk summary:Īnd thus I wasn't 100% sure, if this is normal situation or if my disk is failing.
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