CrystalDiskInfo for Windows

Product summary

CrystalDiskInfo is a utility that reads health and status information directly from attached storage devices and presents the results as readable diagnostic summaries. It pulls SMART (Self‑Monitoring, Analysis, and Reporting Technology) data from each detected drive, converts vendor counters into normalized metrics using the drive‑reported thresholds, and displays device identity and sensor outputs in dedicated panels. The tool shows live readings while it is open and reports values exactly as returned by the drive firmware—no smoothing, weighting, or corrective processing is applied.

How data is collected and shown

• The program queries supported drives continuously while the interface is active and displays the latest readings rather than historical averages.
• All shown metrics come straight from the drive’s firmware responses; the application does not alter those values.
• Identification fields such as model name, firmware version, interface mode, and capacity are presented alongside diagnostic attributes but kept separate from SMART tables.

SMART attribute handling

CrystalDiskInfo separates raw SMART counters from their normalized indicators and shows both kinds of information together. For each attribute it lists:

• the current normalized score,
• the worst recorded score,
• the manufacturer threshold,
• and the raw counter value.

Health labels are determined by comparing normalized values to the thresholds defined in SMART; the software does not combine attributes into a proprietary composite score or apply its own weighting scheme.

Sensors and real‑time monitoring

• Temperature values are read from supported sensors and updated in real time.
• Multiple connected drives are monitored at the same time; each drive’s attributes and temperatures are shown independently rather than being aggregated.

Alerts and notifications

The application contains built‑in checks that monitor SMART attributes and temperature limits. When a configured condition is exceeded, notification routines are triggered to inform the user. The program runs exclusively as a foreground diagnostic tool and does not provide background monitoring services, integrated benchmarking, or performance measurement utilities.

Export and report content

Exported output is plain text and is a snapshot of what is currently displayed on screen. Exported reports include, in this order:

• temperature values,
• SMART tables,
• and device identification details.

The exported file mirrors the on‑screen presentation without added summarization or further processing.

Capabilities and limits

Capabilities (what it does):

• Text export and logging
• Alert threshold monitoring
• Health state calculation
• Temperature surveillance
• SMART attribute interpretation
• Drive identification reporting

Limitations (what it does not do):

• Firmware updates
• Performance benchmarking
• Automated repair or maintenance tasks
• Error correction services
• Surface or sector scanning

CrystalDiskInfo’s scope is deliberately narrow: it focuses on extracting and presenting diagnostic data from drives. It does not perform low‑level repairs, update firmware, run background agents, or integrate with external management platforms or systemwide diagnostic frameworks.