I modified a Powershell script posted by austinmartinez2 at Spiceworks Sort ShadowCopies by Volume so that I could determine which drives have System Restore enabled.

I tried to make the output appear the way the information is presented in the control panel. Tested in Windows 7 SP1 and Windows 10 1809.

# Sort ShadowCopies by Volume

# https://community.spiceworks.com/topic/2155972-sort-shadowcopies-by-volume

# Original by austinmartinez2 Spiceworks



$shadowStorageList = @();

$volumeList = Get-WmiObject Win32_Volume -Property DriveLetter,DeviceID,Capacity,FreeSpace -Filter "DriveType=3 and FileSystem='NTFS'" | select @{n="DriveLetter";e={$_.DriveLetter.ToUpper()}},DeviceID,@{n="CapacityGB";e={([math]::Round([int64]($_.Capacity)/1GB,2))}},@{n="FreeSpaceGB";e={([math]::Round([int64]($_.FreeSpace)/1GB,2))}} | Sort DriveLetter;

$shadowStorages = gwmi Win32_ShadowStorage -Property AllocatedSpace,DiffVolume,MaxSpace,UsedSpace,Volume |

                Select @{n="Volume";e={$_.Volume.Replace("\\","\").Replace("Win32_Volume.DeviceID=","").Replace("`"","")}},

                @{n="DiffVolume";e={$_.DiffVolume.Replace("\\","\").Replace("Win32_Volume.DeviceID=","").Replace("`"","")}},

                @{n="AllocatedSpaceGB";e={([math]::Round([int64]($_.AllocatedSpace)/1GB,2))}},

                @{n="MaxSpaceGB";e={([math]::Round([int64]($_.MaxSpace)/1GB,2))}},

                @{n="UsedSpaceGB";e={([math]::Round([int64]($_.UsedSpace)/1GB,2))}}



$volumeList | Where-Object {$_.DriveLetter -ne $Null} | ForEach-Object {

  $DeviceID = $_.DeviceID

  $DriveLetter = $_.DriveLetter

  $DriveCapacityGB = $_.CapacityGB

  $Protection = "Off"

  #$AllocatedSpaceGB = ""

  $UsedSpaceGB = ""

  $MaxSpaceGB = ""

  $MaxSpacePercent = ""

  

  foreach ($shStorage in $shadowStorages) {

    if ($shStorage.Volume -eq $DeviceID) {

	  $Protection = "On"

	  #$AllocatedSpaceGB = $shStorage.AllocatedSpaceGB

      $UsedSpaceGB = $shStorage.UsedSpaceGB

      $MaxSpaceGB = $shStorage.MaxSpaceGB

	  $MaxSpacePercent = "{0:P0}" -f ($MaxSpaceGB / $DriveCapacityGB)

	}

  }

  

  $objVolume = New-Object PSObject -Property @{

      DriveLetter = $DriveLetter

	  Protection = $Protection

      #AllocatedSpaceGB = $AllocatedSpaceGB

      UsedSpaceGB = $UsedSpaceGB

      MaxSpaceGB = $MaxSpaceGB

	  MaxSpacePercent = $MaxSpacePercent

    }

    $shadowStorageList += $objVolume;

}



$shadowStorageList | Select DriveLetter, Protection, UsedSpaceGB, MaxSpaceGB, MaxSpacePercent