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#21
From the drive properties > Tools I ran "Scan" which did find a few errors. I then ran "Repair" which repaired any error. Neither took very long so the drive must have been in good shape.
I'm currently defragging the drive which i rarely do. After the defrag finishes I may run chkdsk from the command line using one or more switches.
CHKDSK [volume[[path]filename]]] [/F] [/V] [/R] [/X] [/I] [/C] [/L[:size]] [/B] [/scan] [/spotfix]
volume Specifies the drive letter (followed by a colon), mount point, or volume name.
filename FAT/FAT32 only: Specifies the files to check for fragmentation.
/F Fixes errors on the disk.
/V On FAT/FAT32: Displays the full path and name of every file on the disk. On NTFS: Displays cleanup messages if any.
/R Locates bad sectors and recovers readable information (implies /F, when /scan not specified).
/L:size NTFS only: Changes the log file size to the specified number of kilobytes. If size is not specified, displays
current size.
/X Forces the volume to dismount first if necessary. All opened handles to the volume would then be invalid
(implies /F).
/I NTFS only: Performs a less vigorous check of index entries.
/C NTFS only: Skips checking of cycles within the folder structure.
/B NTFS only: Re-evaluates bad clusters on the volume (implies /R)
/scan NTFS only: Runs an online scan on the volume
/forceofflinefix NTFS only: (Must be used with "/scan") Bypass all online repair; all defects found
are queued for offline repair (i.e. "chkdsk /spotfix").
/perf NTFS only: (Must be used with "/scan") Uses more system resources to complete a scan as fast as
possible. This may have a negative performance impact on other tasks running on the system.
/spotfix NTFS only: Runs spot fixing on the volume
/sdcleanup NTFS only: Garbage collect unneeded security descriptor data (implies /F).
/offlinescanandfix Runs an offline scan and fix on the volume.
/freeorphanedchains FAT/FAT32/exFAT only: Frees any orphaned cluster chains instead of recovering their contents.
/markclean FAT/FAT32/exFAT only: Marks the volume clean if no corruption was detected, even if /F was not specified.
The /I or /C switch reduces the amount of time required to run Chkdsk by skipping certain checks of the volume.