: Open the folder and launch DiskMark64.exe (for 64-bit Windows) or DiskMark32.exe . No installation is required.
: The CrystalDiskMark project page hosts older and current releases in ZIP format if you need a specific past version. How to Use the Portable Version Download Crystal Disk Mark Portable rar
: Note that the tool requires Administrator rights to measure local drives accurately, though it may not show Network Drives if run with these privileges. Key Performance Details CrystalDiskMark - Crystal Dew World [en] - : Open the folder and launch DiskMark64