Get the program
Current release
MIT licensed · Trusted by millions of installs
CrystalDiskInfo reads Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T.) telemetry from mechanical disks and solid-state drives, then translates it into plain-language health cues. The app stays small, ships without ads, and is ideal when you want temperature trends, reallocated sector counts, and SSD wear indicators without opening a spreadsheet.
What you can monitor
Each module below maps to a real workflow—whether you are auditing a fleet of laptops or watching a single gaming rig.
SMART signal decoding:
- Inspect reallocated sectors, uncorrectable errors, and power-on hours without digging through vendor PDFs.
- Open raw attribute values when you need forensic-level detail beside the friendly health summary.
- Tune warning thresholds so “Caution” only appears when your own playbook says it should.
Proactive alerting:
- Route email notifications the moment a drive slips from stable to risky, including thermal excursions.
- Keep the resident tray helper enabled for audible cues when you are away from the desk.
- Pair temperature limits with health states so night backups do not silently cook a failing disk.
Acoustic and power shaping:
- Where firmware allows, adjust Automatic Acoustic Management (AAM) and Advanced Power Management (APM) without third-party vendor tools.
- Trade a few decibels for quieter nights on legacy HDDs, or bias toward performance when thermals look safe.
- Works alongside both rotating media and flash-based drives that expose compatible knobs.
Trend visualization:
- Plot SMART counters over weeks to catch gradual NAND wear or creeping reallocation rates.
- Overlay temperature swings with workload spikes to explain sudden throttling.
- Export-friendly charts help when you need evidence for warranty or finance teams.
Gallery: tap a tile to zoom, then use keyboard arrows to move between shots.
Interface gallery
Select any preview to open the full-screen viewer; arrow keys move between captures.