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Issues with invoke-command -scriptblock with double {} and BCDEDIT

I'm trying to use powershell to commit a Windows BCD change. That BCDEDIT change line looks like this if run from a regular command line:

bcdedit /set {default} recoveryenabled No

BCDEDIT requires being run as an admin, so i've got a powershell script that's called from a scheduled task, and the script itself is really simple, as follows:

invoke-command -scriptblock {start-process -Verb RunAS bcdedit /set {default} recoveryenabled No}

However, when i run that, i get the following:

Invoke-Command : Parameter set cannot be resolved using the specified named    
parameters. At line:1 char:1

+ invoke-command "bcdedit /set {default} recoveryenabled No"
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo          : InvalidArgument: (:) [Invoke-Command],      ParameterBindingException
+ FullyQualifiedErrorId :     AmbiguousParameterSet,Microsoft.PowerShell.Commands.InvokeCommandCommand

I'm assuming i need to wrap the {default} command somehow because it's already in a { } via the -scriptblock section - how would I proceed?

I probably could just use a plain-ol' DOS cmd script, but i want to use PowerShell as I like the logging features/etc and i'm performing other functions with the same script.

Owen

Solution

  • I changed the code into these and it worked.

    Invoke-Command -ScriptBlock {Start-Process bcdedit -Verb RunAS -ArgumentList "/set {default} recoveryenabled NO"}

    The bunch of things after bcdedit, /set {default} recoveryenabled No are actually bcdedit's parameters. You have to start the process of bcdedit and pass the rest of the things as its parameter.