Check allocation unit size of formatted NTFS volume

To easily check the current allocation unit size of formatted NTFS volume, we can perform fsutil command to do it.

1. Launch Command Prompt at administrator.

2. Perform fsutil fsinfo ntfsinfo <Drive letter or CSV path> to check the "Bytes Per Cluster".

This volume was formatted as 4K

This volume was formatted as 64K

Or, we can perform Get-CimInstance Win32_Volume | FT Name,BlockSize -AutoSize to check it.

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