CrystalDiskInfo

Monitor your hard drives and SSDs with CrystalDiskInfo, the essential disk health monitoring tool for Windows users who need real-time visibility into storage performance and reliability.

Your storage drives contain critical data, but most users never check their actual health status until failure strikes. CrystalDiskInfo gives you complete control by displaying detailed SMART (Self-Monitoring, Analysis and Reporting Technology) data from every storage device connected to your PC—internal hard drives, external SSDs, USB pen drives, SD cards, and more. The moment you launch the app, you'll see all connected drives with their general health status and estimated remaining lifespan, especially valuable for SSDs nearing end-of-life.

Understand what your storage is really telling you. The app displays a comprehensive range of parameters: current temperature, total runtime hours, power-on cycles, read and write speeds, reallocated sectors, read errors, and dozens more. Each metric tells part of your drive's story. When any parameter shows abnormal levels, CrystalDiskInfo highlights it immediately so you can back up your data before failure occurs. For instance, excessive reallocated sectors signal an unreliable drive that needs replacement soon. You'll also see firmware versions, serial numbers, interface types, and the total amount of data written and read—everything manufacturers embed in SMART technology but hide from ordinary users.

Take action before disaster strikes by setting up custom alerts and automatic monitoring. Define your own thresholds for temperature, error counts, and other parameters based on your hardware and usage patterns. When a metric exceeds your limits, receive on-screen notifications or activate warning sounds—you choose how to stay informed. This proactive approach transforms you from a reactive data-loss victim into someone who maintains their storage intelligently.

The tool supports a wide variety of connection technologies: SATA, NVMe, USB, and RAID arrays (all recognized by Windows). Advanced SSD features like TRIM support help extend drive lifespan through efficient maintenance. Note that network storage and NAS devices fall outside the app's scope—CrystalDiskInfo monitors locally connected hardware only.

Anticipate failures, schedule maintenance, and protect your irreplaceable files. Download CrystalDiskInfo today and gain the detailed storage intelligence you've been missing.