When Windows detects disk read anomalies, standard automated advice often urges users to run chkdsk /f /r. However, on physically degrading mechanical hard drives (indicated by growing Reallocated Sectors [ID 05] or Current Pending Sectors [ID C5]), chkdsk /r forces prolonged exhaustive reading of every individual sector cluster. On an already failing spindle motor or unstable magnetic head, this intense stress causes catastrophic head crashes or surface scoring before you can extract your critical data.
Recommended Protocol: 1) Always backup your BitLocker recovery key first. 2) Copy mission-critical user documents with bounded retry limits (e.g. robocopy /R:1 /W:1). 3) Clone the drive using non-destructive block-imaging software. 4) Only perform file system surface checks after the drive image is secured.