How do you use DriveInfo to get information about available drives and their free space?

Question

Anubhav Kumar · Answer

You can use the System.IO.DriveInfo class in C# to get information about available drives and their properties such as
name, type, format, total size, and
free space.
Example: List All Drives and Their Free Space
using System;
using System.IO;
class Program
{
    static void Main()
    {
        DriveInfo[] allDrives = DriveInfo.GetDrives();
        foreach (DriveInfo drive in allDrives)
        {
            Console.WriteLine($"Drive: {drive.Name}");
            if (drive.IsReady)
            {
                Console.WriteLine($"  Drive type: {drive.DriveType}");
                Console.WriteLine($"  Volume label: {drive.VolumeLabel}");
                Console.WriteLine($"  File system: {drive.DriveFormat}");
                Console.WriteLine($"  Available space to current user: {drive.AvailableFreeSpace / 1024 / 1024} MB");
                Console.WriteLine($"  Total available space: {drive.TotalFreeSpace / 1024 / 1024} MB");
                Console.WriteLine($"  Total size of drive: {drive.TotalSize / 1024 / 1024} MB");
            }
            else
            {
                Console.WriteLine("  Drive not ready.");
            }
            Console.WriteLine();
        }
    }
}
🔍 Output Sample (Windows)
Drive: C:\
  Drive type: Fixed
  Volume label: System
  File system: NTFS
  Available space to current user: 128736 MB
  Total available space: 128736 MB
  Total size of drive: 249856 MB
Drive: D:\
  Drive not ready.
Useful Properties of DriveInfo
Property
Description
Name
Drive letter (e.g., C:\)
DriveType
Fixed, Removable, Network, etc.
IsReady
True if the drive is accessible
VolumeLabel
Name assigned to the drive
DriveFormat
File system type (NTFS, FAT32, etc.)
AvailableFreeSpace
Free space available to current user
TotalFreeSpace
Total free space on the drive
TotalSize
Total capacity of the drive
and

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How do you use DriveInfo to get information about available drives and their free space?

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1 Answers

Example: List All Drives and Their Free Space

🔍 Output Sample (Windows)

Useful Properties of `DriveInfo`

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Property	Description
`Name`	Drive letter (e.g., `C:\`)
`DriveType`	Fixed, Removable, Network, etc.
`IsReady`	True if the drive is accessible
`VolumeLabel`	Name assigned to the drive
`DriveFormat`	File system type (NTFS, FAT32, etc.)
`AvailableFreeSpace`	Free space available to current user
`TotalFreeSpace`	Total free space on the drive
`TotalSize`	Total capacity of the drive