Windows – Check the cluster size of an exFAT drive on Windows

exfatfilesystemswindowswindows 10

How do I check the cluster/allocation size of an exFAT drive on Windows?

Best Answer

You can use wmic

C:\>wmic volume get driveletter,blocksize
BlockSize  DriveLetter
4096       D:
4096       C:

On powershell you'll have various solutions like below

PS C:\> (Get-Volume C).AllocationUnitSize
PS C:\> (Get-WmiObject win32_volume | where { $_.driveletter -eq 'C:' }).BlockSize

Alternatively you can also run fsutil fsinfo ntfsinfo drive: as admin to get more detailed information, or use fsutil fsinfo ntfsinfo <drive> | findstr /c:"Bytes Per Cluster" to get just the cluster size