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💾 Review recognized HDD, SSD, and NVMe health indicators

Disk SMART Health Analyzer

Analyze smartctl or CrystalDiskInfo text locally for temperature, reallocated and pending sectors, NVMe wear, media errors, and health warnings.

Updated July 26, 2026✓ Free to useLocal browser processing
🔒 Local browser processing · No input upload

Analyze disk SMART data

Local-onlyRuns in your browser. Pasted text and selected files stay on this device.
About this utility

How does the Disk SMART Health Analyzer work?

SMART data exposes counters and status fields reported by a storage device. This utility recognizes common ATA and NVMe indicators and presents them in a compact, cautious summary.

It is intended to help decide whether backup and manufacturer diagnostics should be prioritized, not to certify a drive as safe.

Sector indicators

Checks recognized reallocated, pending, and uncorrectable sector fields.

NVMe wear

Surfaces percentage used and media/data integrity errors when present.

Temperature context

Shows a recognized current temperature and conservative warnings.

Better results

Best practices before using the result

  1. Back up important data before extended tests when a drive is clicking, disappearing, extremely slow, or reporting errors.
  2. Use the drive manufacturer diagnostic and review the complete SMART log, not only one attribute.
  3. Avoid writing large amounts of data to a drive suspected of failing until backups are complete.

The analyzer reports only evidence found in the supplied content. “Not detected” does not prove a setting, component, or problem is absent.

Common scenarios

When this utility is useful

Slow or freezing PCCheck whether storage warnings support further disk investigation.
Used drive assessmentReview wear and error counters before trusting the drive with important data.
Backup priorityTreat pending, uncorrectable, media, or failed health indicators as reasons to protect data quickly.
Support evidenceSummarize key fields before contacting the manufacturer or a technician.
Continue troubleshooting

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Common questions

Frequently asked questions

Does PASSED mean the drive cannot fail?

No. SMART has limited predictive coverage and a drive can fail without an earlier failed status.

Are reallocated sectors always fatal?

Not always, but growth or related pending and uncorrectable counts should increase backup and diagnostic priority.

What does NVMe percentage used mean?

It is a vendor-reported endurance-consumption estimate; 100 percent does not necessarily mean instant failure, but it indicates the rated endurance has been consumed.

Is my SMART output uploaded?

No. The text or file is processed locally in the browser.