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DriveInfo.DriveFormat Property

.NET Framework 4

Updated: July 2010

Gets the name of the file system, such as NTFS or FAT32.

Namespace:  System.IO
Assembly:  mscorlib (in mscorlib.dll)
C#
C++
F#
VB
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public string DriveFormat { get; }

Property Value

Type: System.String
The name of the file system on the specified drive.
Exception Condition
UnauthorizedAccessException

Access to the drive information is denied.
DriveNotFoundException

The drive does not exist or is not mapped.
IOException

An I/O error occurred (for example, a disk error or a drive was not ready).

Use DriveFormat to determine what formatting a drive uses.

The following code example demonstrates the use of the DriveInfo class to display information about all of the drives on the current system.

C#
VB
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using System;
using System.IO;

class Test
{
    public static void Main()
    {
        DriveInfo[] allDrives = DriveInfo.GetDrives();

        foreach (DriveInfo d in allDrives)
        {
            Console.WriteLine("Drive {0}", d.Name);
            Console.WriteLine("  File type: {0}", d.DriveType);
            if (d.IsReady == true)
            {
                Console.WriteLine("  Volume label: {0}", d.VolumeLabel);
                Console.WriteLine("  File system: {0}", d.DriveFormat);
                Console.WriteLine(
                    "  Available space to current user:{0, 15} bytes", 
                    d.AvailableFreeSpace);

                Console.WriteLine(
                    "  Total available space:          {0, 15} bytes",
                    d.TotalFreeSpace);

                Console.WriteLine(
                    "  Total size of drive:            {0, 15} bytes ",
                    d.TotalSize);
            }
        }
    }
}
/* 
This code produces output similar to the following:

Drive A:\
  File type: Removable
Drive C:\
  File type: Fixed
  Volume label: 
  File system: FAT32
  Available space to current user:     4770430976 bytes
  Total available space:               4770430976 bytes
  Total size of drive:                10731683840 bytes 
Drive D:\
  File type: Fixed
  Volume label: 
  File system: NTFS
  Available space to current user:    15114977280 bytes
  Total available space:              15114977280 bytes
  Total size of drive:                25958948864 bytes 
Drive E:\
  File type: CDRom

The actual output of this code will vary based on machine and the permissions
granted to the user executing it.
*/

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Date

History

Reason

July 2010

Updated exception information.

Content bug fix.
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DriveFormat Sample Using PowerShell 
<#
.SYNOPSIS
    This script gets and displays basic information about drives on a local system. 
.DESCRIPTION
    This script uses the System.Io.DriveInfo's GetDrives method to get drive
    info which is then displayed.    This is a re-implementation of an MSDN
    sample.
.NOTES
    File Name  : Get-DriveInfo.ps1
    Author     : Thomas Lee - tfl@psp.co.uk
    Requires   : PowerShell Version 2.0
.LINK
    This script posted to:
        http://www.pshscripts.blogspot.com
    MSDN Sample posted at:
        http://msdn.microsoft.com/en-us/library/system.io.driveinfo.aspx
.EXAMPLE
   PSH [C:\foo]: .\Get-Driveinfo.ps1'
   Drive C:\
      File type: Fixed
      Volume label:
      File system: NTFS
      Available space to current user:           6.75 gb
      Total available space:                     6.75 gb
      Total size of drive:                     48.828 gb
   Drive D:\
      File type: Fixed
      Volume label:
      File system: FAT32
      Available space to current user:           1.81 gb
      Total available space:                     1.81 gb
      Total size of drive:                      2.003 gb
      <ETC...>
#>

# Get Drive Info
$allDrives = [system.IO.DriveInfo]::GetDrives()

# Now display details
foreach ($d in $allDrives)  {
    "Drive {0}" -f $d.Name
     "  File type: {0}" -f $d.DriveType
    if ($d.IsReady)  {
         "  Volume label: {0}" -f $d.VolumeLabel
         "  File system: {0}"  -f $d.DriveFormat
         $fs  = $d.AvailableFreeSpace/1gb
         $tfs = $d.TotalFreeSpace/1gb
         $TS  = $d.TotalSize/1gb
         "  Available space to current user:{0, 15:n2} gb" -f $fs
         "  Total available space:          {0, 15:n2} gb" -f $tfs
         "  Total size of drive:            {0, 15:n3} gb" -f $ts
    }
}
Po
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