You should also consider running it any time Windows has shut down abnormally-such as after a power loss or system crash. We recommend running chkdsk every few months as part of routine maintenance along with using a S.M.A.R.T. That may all sound very technical, but don’t worry: you don’t need to understand the ins and outs of how it works to know when you should run it. Chkdsk attempts to fix these problems by repairing soft bad sectors, and marking hard bad sectors so they won’t be used again. Bad sectors come in two forms: soft bad sectors, that can occur when data is written badly, and hard bad sectors that can occur because of physical damage to the disk. Chkdsk can also optionally scan every sector on a disk volume looking for bad sectors.Such errors might include corrupt entries in a volume’s master file table (MFT), bad security descriptors associated with files, or even misaligned time stamp or file size information about individual files. Chkdsk’s basic function is to scan the integrity of the file system and file system metadata on a disk volume and fix any logical file system errors that it finds.
Chkdsk performs a couple of functions, depending on how it’s run: It’s not a terribly exciting tool-and running it can take some time-but it can really help prevent bigger problems and loss of data in the long run. The Check Disk utility, also known as chkdsk (since that’s the command you use to run it) scans through your entire hard drive to find and fix problems.
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