How to find the Allocation Unit Size for a Volume
CHUONG K. NGUYEN – BSc., MCSEx2, MCSAx2, MCP, MCTS, MCITP, CCNA
Launch the Command Prompt as Administrator, type
fsutil fsinfo ntfsinto F:
The Bytes Per Cluster information is the Allocation Unit Size.
Alternatively, you can use diskpart to achieve the same goal.
Type select volume 3
Type filesystem and the Allocation Unit Size will show.
That’s it!