How to uninstall CrystalDiskInfo on Windows

CrystalDiskInfo keeps its settings inside its own program folder rather than a separate data folder, so removing that folder removes everything it wrote. This guide covers CrystalDiskInfo installed machine-wide from the CrystalDewWorld.CrystalDiskInfo winget package.

Quit CrystalDiskInfo first

Close the CrystalDiskInfo window and check Task Manager (Ctrl+Shift+Esc) for DiskInfoA64.exe (or DiskInfo32.exe on a 32-bit system). In this test, the vendor's own uninstaller detected CrystalDiskInfo still running and stopped with a "currently running" message instead of continuing, so make sure it is fully closed before you uninstall.

Remove the app with its own uninstaller

Go to Settings › Apps › Installed apps, find CrystalDiskInfo, and choose Uninstall, or run:

winget uninstall --id CrystalDewWorld.CrystalDiskInfo

Where the data lives

Location	What it holds	What to do
`Program Files\CrystalDiskInfo\DiskInfo.ini`	Its settings, written inside the program folder itself	No separate backup needed; it is removed together with the program folder

CrystalDiskInfo has no separate settings folder under %APPDATA% or %LOCALAPPDATA%; everything it writes stays inside its own install folder.

Check the result

Run these read-only commands after the uninstall finishes:

Get-Process DiskInfoA64, DiskInfo32 -ErrorAction SilentlyContinue
winget list --id CrystalDewWorld.CrystalDiskInfo
Test-Path "$env:ProgramFiles\CrystalDiskInfo"

No output from Get-Process only means this query observed no matching process; a suppressed error leaves the running state unknown.
A completed winget list query with no match means the package record is gone; a matching row means the uninstall did not finish.
Test-Path returning False means the program folder, and the settings file inside it, is gone; True means files remain there, which usually means the app was still running when the uninstaller tried to remove it.

If you installed it with winget

winget uninstall runs the same Inno Setup uninstaller Settings › Apps uses and removes the same program folder; there is no separate data folder for it to leave behind.

What Mole lists

For CrystalDiskInfo installed machine-wide from winget:

The program folder, the Desktop shortcut and the public Start Menu folder are selected by default. There is no separate settings folder to list, since CrystalDiskInfo keeps DiskInfo.ini inside the program folder itself.

What this test covered

Tested with CrystalDiskInfo 9.9.2 installed through winget, machine scope, x86 Inno Setup package. The vendor's own uninstaller refused to continue twice while the app was still running before a manual close let it finish; quitting the app fully before you uninstall avoids this.