chkdsk /spotfix (Also requires reboot for system drive.) | Switch | Description | |--------|-------------| | /f | Fixes errors on the disk. | | /r | Finds bad sectors and recovers readable info (implies /f ). | | /x | Forces the volume to dismount first (if possible). | | /scan | Online scan on system drive (Windows 11+). | | /perf | Use with /scan for faster scan (uses more system resources). | | /spotfix | Fixes only pre‑logged issues (faster). | | /b | Re‑evaluates bad clusters (NTFS only, with /r ). |