How to Get Disk Size and Free Space Using PowerShell

Tagged: PowerShell

Introduction#

Sometimes IT Admin or Software Engineers have a task to get information about disk space. Rather than navigating Windows Explorer to get information, they can automate using PowerShell which is much quicker.

In this article, we’ll walk through how to get information about disk size and free space using PowerShell.

Solution#

Using Get-PSDrive Cmdlet#

Get-PSDrive cmdlet can be used to get drive information.

Get-PSDrive

To get drive information on specific drive, we can specify the drive name:

Get-PSDrive -Name C

The information will looke like below image:

Using Get-Volume Cmdlet#

Get-Volume cmdlet can also be used to get disk size and free space.

Get-Volume

To get drive information on specific drive, we can specify the drive name:

Get-Volume -DriveLetter C

The information will looke like below image:

Using Get-WmiObject Cmdlet#

You can also use Get-WmiObject cmdlet to get disk size and free space.

Get-WmiObject -ClassName Win32_LogicalDisk | ForEach-Object {
    [PSCustomObject]@{
        DeviceID  = $_.DeviceID
        Size      = [Math]::Round($_.Size / 1GB, 2)
        FreeSpace = [Math]::Round($_.FreeSpace / 1GB, 2)
    }
}

The result will look like below image:

Using Get-CimInstance Cmdlet#

You can also use Get-CimInstance cmdlet to get disk size and free space.

Get-CimInstance -ClassName Win32_LogicalDisk | ForEach-Object {
    [PSCustomObject]@{
        DeviceID  = $_.DeviceID
        Size      = [Math]::Round($_.Size / 1GB, 2)
        FreeSpace = [Math]::Round($_.FreeSpace / 1GB, 2)
    }
}

The result will look like below image:

Using Wmic command#

WMIC is a command-line tool in Windows that allows users to access system-related information, such as disk size. The commands can be run in PowerShell as well.

wmic logicaldisk get size, freespace, caption

Below is the result:

Using Fsutil command#

Fsutil is another command line utility tools that can be used in PowerShell to get disk size and free space information.

fsutil volume diskfree c:

Below is the result where the bytes are already formatted by default:

Conclusion#

There are 4 cmdlet that can be used to get disk size and free space using PowerShell: Get-PSDrive, Get-Volume, Get-WmiObject, and Get-CimInstance.

There are also 2 other commands that can be used which are Wmic and Fsutil.