A technician notices multiple disk errors in the Event Viewer. Which of the following tools would BEST diagnose this issue?

CHKDSK (chkdsk.exe) analyzes the file system integrity and scans for bad sectors on a disk volume, directly addressing the types of disk errors that appear in Event Viewer under sources like Disk or NTFS. It can also attempt to repair logical file system errors and mark bad sectors to prevent future writes, making it the most targeted diagnostic and repair tool for this scenario.

FDISK is a legacy DOS-era partitioning tool used to create and delete disk partitions; it does not scan for or diagnose file system errors.

BOOTREC is used to repair the Master Boot Record, boot sector, or Boot Configuration Data - it addresses boot failures, not general disk read/write errors.

DISKPART is a command-line disk and partition management utility used for creating, deleting, and formatting partitions, not for diagnosing file system or sector-level errors.