Clean WDS Prestaged Computers

Good Day,

I need a script to clean my WDS server prestage device information.  We have over 600 computers that have no Referral server listed.  I would like to remove all the prestaging information from them.

I am a novice at scripting.

When I run the following command:
WDSUTIL / Verbose /Get-ALLDevices /Forest:Yes

It displays all the information for all the prestaged machines.

When I run this command:
WDSUTIL / Verbose /Get-ALLDevices /Forest:Yes /ReferralServer:
(we have multiple referral servers and this displays all systems with the referral server defined)

It displays all the information for computers that have any referral server defined.

I would like to only keep the prestaging information for computers that have a referralserver defined.

Any help is appreciated.
mrfiteAsked:
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Leon TaljaardSystem Center Specialist - ArchitectureCommented:
Hey there,

Are these ones without the "referralServer" perhaps rejected ones ?

Maybe have a look at this

Purging WDS database and clearing prestaging values from AD computers

Do you get anything when using this command

WDSUTIL /Delete-AutoAddDevices /DeviceType:RejectedDevices

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mrfiteAuthor Commented:
Sorry for any confusion,

All the computers were approved through an Active Directory script.  None were rejected.

When I ran the script you provided it returned no matching devices.
Leon TaljaardSystem Center Specialist - ArchitectureCommented:
Oh ok no problem, have you perhaps had a look at the link provided ?

You are probably going to need to either remove these devices from AD or perhaps flush the entire WDS database and re-auth all PC's again. But i would be careful in doing that first.

I have never needed to try remove machines that had no server defined
mrfiteAuthor Commented:
After a few days of searching I figured out the variable I was missing.  netbootMachineFilePath defines the referral server.  

Below is the powershell script that will clean up Windows Deployment Services (WDS) when you have prestaged machines with no referral server.

Get-ADComputer -Filter {NetbootGUID -like "*"} -Properties NetbootGUID,created,OBJECTGUID,name,netbootMachineFilePath | ? {$_.netbootMachineFilePath -eq $null} | Set-ADComputer -clear NetbootGUID

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mrfiteAuthor Commented:
This solution does exactly what it should do.
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