CrystalDiskInfo
Open sourceCrystal Dew World
- Category
- System tools
- Version
- 9.9.2
- Size
- ~10 MB
- Licence terms
- Open source (MIT) · free for personal and business use
- Supported OS
- Windows 11 · 10
- Install method
- Automatic install supported
- Developer
- Crystal Dew World
- Downloads via this site
This links to Crystal Dew World’s own download source. AfterFormat neither stores nor modifies installer files.
What it is
A drive health tool from Crystal Dew World. It reads S.M.A.R.T. data from SSDs and hard drives and reports health status, total power-on hours, total data written and temperature. It is used to spot warning signs before a drive fails.
When to pick this
To check drive health while you are reformatting anyway, or to verify real usage on a second-hand PC or SSD.
Details
Health status
Good, caution or bad, shown by colour. Once it says caution, back up what matters first.
SSD wear
Total bytes written (TBW) indicates how much of the drive’s rated life has been used — useful evidence when buying a second-hand SSD.
Temperature
Shows drive temperature live and warns above a threshold. Handy for diagnosing NVMe SSD heat problems.
Distribution
- winget ID
- CrystalDewWorld.CrystalDiskInfo
- Redistribution policy
- Open source licence
- Last checked
- 2026-09-09
- Official site
- https://crystalmark.info/en/software/crystaldiskinfo/
