Monitor low disk space for computers

Question

Hi All,&nbsp;We have a requirement to monitor low disk space, particularly on devices with less than 1GB of available space. We were considering creating a custom compliance policy, but this would lead to blocking access to company resources as soon as the device becomes non-compliant. Therefore, we were wondering if there are any other automated methods we could use to monitor the logical disk space (primarily the C drive) using Intune or Microsoft Graph.&nbsp;Thanks in advance,Dilan

sebastiaansmits · Answer

Hi,You could us a pro active remediation script that triggers on disk space that fall below 1GB. See more info here: https://learn.microsoft.com/en-us/mem/intune/fundamentals/remediations&nbsp;As example a detection script for this scenario I asked ChatGPT to create (purely as example and needs to be checked and refined further):&nbsp;$ErrorActionPreference = "Stop"

# Set the threshold (1 GB)
$thresholdGB = 1
$thresholdBytes = $thresholdGB * 1GB

# Get the free space on the C: drive (you can change this if needed)
$drive = Get-PSDrive -Name C

# Check if free space is below threshold
if ($drive.Free -lt $thresholdBytes) {
    # Return a failure exit code for Intune remediation
    Write-Host "Disk space is below 1 GB. Triggering remediation."
    exit 1
} else {
    # Disk space is sufficient
    Write-Host "Disk space is above the 1 GB threshold."
    exit 0
}&nbsp;You can trigger remediation script to perform something, not sure what you like to do but that should be a second script.&nbsp;Hope this helps.&nbsp;Regards,&nbsp;Sebastiaan

beredan · Answer

I agree with the intent of using Remediation instead to detect and clean up.Here is an example of what I have recently setup. Use at your own risk!Detection script for less than 30GB$MinimumThreshold = 30GB
$FreeSpace = (Get-Volume -DriveLetter ($env:SystemDrive -replace ":")).SizeRemaining

if($FreeSpace -lt $MinimumThreshold){
    exit 1
}else{
    exit 0
}Remediation script to clear Configuration Manager Cache, run Disk Cleanup and clean up temp directories.## 1. Clean out Configuration Manager Cache Directory ##
[__comobject]$CCMComObject = New-Object -ComObject 'UIResource.UIResourceMgr'
$CacheInfo = $CCMComObject.GetCacheInfo().GetCacheElements()
ForEach ($CacheItem in $CacheInfo) {
    $null = $CCMComObject.GetCacheInfo().DeleteCacheElement([string]$($CacheItem.CacheElementID))
}

## 2. Run Disk Clean-up with selection actions ##
$CleanupSelection = @('Temporary Files','System error minidump files','System error memory dump files','Recycle Bin','Device Driver Packages','Windows Error Reporting Files')
Foreach ($KeyName in $CleanupSelection) {
    $NewItemParams = @{
        Path         = "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\VolumeCaches\$KeyName"
        Name         = 'StateFlags0001'
        Value        = 1
        PropertyType = 'DWord'
        ErrorAction  = 'SilentlyContinue'
    }
    New-ItemProperty @NewItemParams -Force | Out-Null
}
$CleanMgr = Start-Process -FilePath CleanMgr.exe -ArgumentList '/sagerun:1' -NoNewWindow -PassThru
$CleanMgr | Wait-Process -Timeout 300 -ErrorAction SilentlyContinue -WarningAction SilentlyContinue

## 3. Clean out Temp Directory and Recycling Manually ##
Remove-Item -path "$Env:Windir\TEMP\*" -Recurse -Force -ErrorAction SilentlyContinue -WarningAction SilentlyContinue
Remove-Item -path "$Env:SystemDrive\`$Recycle.Bin" -Recurse -Force -ErrorAction SilentlyContinue -WarningAction SilentlyContinue&nbsp;

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Monitor low disk space for computers