A powerful disk monitoring tool that helps you understand and optimize the health of your system’s storage drives. Prevent data loss with real-time SMART analysis.
Trusted by over 5 million users worldwide.
What is CrystalDiskInfo?
CrystalDiskInfo is a comprehensive HDD/SSD utility software that supports S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology). It is fully open-source, lightweight, and designed to provide complete visibility into your storage device's condition.
Key Features
Discover the powerful tools that make CrystalDiskInfo the industry standard for disk health monitoring.
Advanced control over Automatic Acoustic Management (AAM) and Advanced Power Management (APM) settings to balance noise and performance.
Receive instant email notifications when drive health deteriorates or temperatures exceed safe thresholds, ensuring 24/7 monitoring.
Comprehensive overview of firmware, serial numbers, interface details, and transfer modes for all connected storage devices.
Visual historical trends of S.M.A.R.T. attributes, allowing you to track degradation patterns over time.
Runs quietly in the system tray with customizable alarm sounds to warn you immediately of any critical status changes.
Deep dive into raw values of S.M.A.R.T. attributes like Read Error Rate, Power-On Hours, and Reallocated Sector Count.
Monitor fleets of workstations and servers to predict drive failures before they cause data loss.
Keep your gaming rig or workstation running at peak performance by monitoring NVMe SSD temperatures.
Verify storage integrity and performance when building I/O intensive applications.
See how CrystalDiskInfo stacks up against other popular disk utility tools.
| Feature |
CrystalDiskInfo
|
Hard Disk Sentinel | HD Tune Pro | HDDScan |
|---|---|---|---|---|
| Price / License | Free (Open Source) | Paid (~$30) | Paid (~$35) | Free |
| Primary Focus | SMART Monitoring | Repair & Enterprise | Benchmarking | Diagnostics |
| Interface |
Modern / Anime
|
Industrial Complex | Dated Style | Simple / Basic |
| Surface Scan |
No
|
Yes (Advanced)
|
Yes (Basic) | Yes (Good) |
| Real-time Alerts |
Yes (Tray/Sound)
|
Yes (Comprehensive) | Limited |
No
|
* Recommendation: Use CrystalDiskInfo for continuous health monitoring and another tool if deep surface repair is needed.
Available in multiple themes to suit your style. All versions are 100% free.
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Classic lightweight design.
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Featuring Aoi character theme.
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Featuring Shizuku character theme.
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Featuring Kurei Kei character theme.
Explore our other powerful system utilities for comprehensive performance testing.
Disk Benchmark
A simple yet powerful disk benchmark software to measure sequential and random read/write speeds of your storage devices.
Comprehensive Benchmark
Trusted by millions of users worldwide. Here's what the community has to say.
Joseph Marketer
Jan 9, 2026
"Detected my SSD speeds instantly. Faster than other tools I've used, though the interface could use a touch-up. Solid 4.5/5."
Alex409
Sep 9, 2025
"Simple, effective, and does exactly what it says on the tin. Approved."
PaulTemps667
Aug 6, 2025
"A must-have for tech enthusiasts. Accurate SMART data that predicts failures. Lightweight and free – can't beat that."
Tanim MIUI
Apr 16, 2025
"Fantastic little utility! Works perfectly."
CairoRipper824
Jan 31, 2025
"Smart design and incredibly easy to use. Thanks for this!"
SteveAce
Jan 2, 2025
"An essential tool for every PC user's toolkit. Extremely useful."
Lyndos
Nov 26, 2024
"Hands down the easiest way to monitor SMART status."
MJA Tanim
Oct 10, 2024
"Simple approach, but highly effective results."
Michael007
Sep 3, 2024
"Worked right out of the box. Auto-detected all my drives immediately."
MSmith935
Aug 27, 2024
"Lightweight but packs a punch. Saved me from potential data loss."
Neykhax
Apr 12, 2024
"The anime themes really add a fun touch to checking disk health."
AirCompanion
Mar 2, 2024
"Consistent performance every time I use it. Great experience."
Al000y
Feb 26, 2024
"Such a helpful piece of software. Highly recommended."
AM637
Feb 4, 2024
"A total lifesaver. The best diagnostic tool I've used."
JustASimp2038
Apr 25, 2025
"Always reliable. Never lets me down."
LeDuyCuong
Dec 27, 2023
"Excellent software quality. Very stable."
LoganAbbott
Sep 11, 2023
"Used this for years. One of the best free HDD/SSD utilities out there."
Joseph Marketer
Jan 9, 2026
"Detected my SSD speeds instantly. Faster than other tools I've used, though the interface could use a touch-up. Solid 4.5/5."
Alex409
Sep 9, 2025
"Simple, effective, and does exactly what it says on the tin. Approved."
PaulTemps667
Aug 6, 2025
"A must-have for tech enthusiasts. Accurate SMART data that predicts failures. Lightweight and free – can't beat that."
Tanim MIUI
Apr 16, 2025
"Fantastic little utility! Works perfectly."
CairoRipper824
Jan 31, 2025
"Smart design and incredibly easy to use. Thanks for this!"
SteveAce
Jan 2, 2025
"An essential tool for every PC user's toolkit. Extremely useful."
Lyndos
Nov 26, 2024
"Hands down the easiest way to monitor SMART status."
MJA Tanim
Oct 10, 2024
"Simple approach, but highly effective results."
Michael007
Sep 3, 2024
"Worked right out of the box. Auto-detected all my drives immediately."
MSmith935
Aug 27, 2024
"Lightweight but packs a punch. Saved me from potential data loss."
Advanced command-line options and deployment parameters for system administrators.
# Auto exit after updating S.M.A.R.T. info
DiskInfo64.exe /Exit
# Output "Edit > Copy" result to DiskInfo.txt
DiskInfo64.exe /Copy
# Output result to file and auto exit
DiskInfo64.exe /CopyExit
Use these commands to integrate CrystalDiskInfo into automated health check scripts or RMM tools. The /CopyExit switch is particularly useful for generating reports without user interaction.
; Gadget Support (Enable via Advanced Features)
[HKEY_CURRENT_USER\Software\Crystal Dew World\CrystalDiskInfo]
; Stores real-time drive statistics for gadgets/skins
"GadgetSupport"=dword:00000001
Enabling "Gadget Support" in the Advanced Features menu writes S.M.A.R.T. data to this registry key, allowing third-party tools like Rainmeter or Sidebar Gadgets to display drive health in real-time.
:: Standard Silent Install (No Restart)
CrystalDiskInfo_9_5_0.exe /VERYSILENT /NORESTART
:: Install to Custom Directory
CrystalDiskInfo_9_5_0.exe /DIR="C:\Tools\CDI" /VERYSILENT /NORESTART
:: Install without Desktop Shortcut
CrystalDiskInfo_9_5_0.exe /VERYSILENT /NORESTART /MERGETASKS=!desktopicon
Ideal for mass deployment via SCCM, Intune, or other endpoint management systems. These switches ensure a seamless background installation without interrupting the user.