Which command is utilized in Windows to check the integrity of files on a hard drive?

The command used in Windows to check the integrity of files on a hard drive is 'chkdsk.' This command scans the file system and file system metadata of a volume for logical and physical errors. When you run 'chkdsk,' it can identify issues such as bad sectors, lost clusters, cross-linked files, and directory errors, and it provides options to repair these problems automatically. This process helps ensure that the data on the hard drive is accessible and intact, making it an essential tool for maintaining disk health.

The other commands serve different functions: 'diskpart' is used for disk partition management, enabling users to create, delete, and resize partitions; 'format' is intended for preparing a disk for use, which essentially erases all data and sets up a file system; and 'fsutil' is a more advanced utility for managing file system tasks but does not directly check the integrity of files like 'chkdsk' does. Thus, 'chkdsk' is the correct choice for checking file integrity on a hard drive in Windows.