Question

I want to get the size of a drive (or UNC path pointing to a partition would be nice, but not required), as well as free space for said drive (or UNC path). This doesn’t need to work cross platform; only in Windows.

I know it’s easy to do in Java 6, but that’s not an option; I’m stuck with Java 5.

I can get the free space available by doing:

cmd.exe /c Z:\ /-c

or

cmd.exe /c \\server\share /-c

and just parsing out the resulting bytes free. However I can’t seem to find a way to get the total drive size.

Any suggestions?

Answer 1

One way to do it would be to use fsutil on the command line. It returns something like this:

D:\>fsutil fsinfo ntfsinfo c: NTFS Volume Serial Number :       0xd49cf9cf9cf9ac5c Version :                         3.1 Number Sectors :                  0x0000000004a813ff Total Clusters :                  0x000000000095027f Free Clusters  :                  0x00000000002392f5 Total Reserved :                  0x0000000000000490 Bytes Per Sector  :               512 Bytes Per Cluster :               4096 Bytes Per FileRecord Segment    : 1024 Clusters Per FileRecord Segment : 0 Mft Valid Data Length :           0x000000000e70c000 Mft Start Lcn  :                  0x00000000000c0000 Mft2 Start Lcn :                  0x0000000000000010 Mft Zone Start :                  0x0000000000624ea0 Mft Zone End   :                  0x0000000000643da0 

Multipy your number of sectors times the bytes per sector to get your size.