-Confirm $false breaks Set-HardDisk

[wprather]

I'm working on a script to automatically extend the hard disk in vsphere and then go into the guest OS and extend it there as well.  I want this script to be completely automated and I don't want the confirmation message to show up.  My issue comes on this line.

Get-Harddisk -vm $hostname|where {$_.name -eq "Hard disk 1"}|Set-Harddisk -CapacityKB $value -Confirm $false

The error thrown is

Set-HardDisk : Cannot bind parameter 'HardDisk'. Cannot convert value "False" t
o type "VMware.VimAutomation.ViCore.Types.V1.VirtualDevice.HardDisk". Error: "I
nvalid cast from 'System.Boolean' to 'VMware.VimAutomation.ViCore.Types.V1.Virt
ualDevice.HardDisk'."
At C:\users\prat294\Documents\test2.ps1:34 char:80
+     $temp = get-harddisk -vm $compname|where {$_.name  -eq $harddisk}|Set-Har
dDisk <<<<  -CapacityKB $newValue -Confirm $false
    + CategoryInfo          : InvalidArgument: (:) [Set-HardDisk], ParameterBi
   ndingException
    + FullyQualifiedErrorId : CannotConvertArgumentNoMessage,VMware.VimAutomat
   ion.ViCore.Cmdlets.Commands.VirtualDevice.SetHardDisk

It is interpreting the $false as a harddisk reference.  I have tried this:

$temp = Get-Harddisk -vm $hostname|where {$_.name -eq "Hard disk 1"}

Set-Harddisk -HardDisk $temp -CapacityKB $value -Confirm $false

The error i get here is different.

Set-HardDisk : Cannot bind parameter 'Persistence' to the target. Exception set
ting "Persistence": "Invalid value passed for the Persistence parameter. The va
lid values are: Persistent, NonPersistent, Undoable, IndependentPersistent, Ind
ependentNonPersistent, Unknown."
At C:\users\prat294\Documents\test2.ps1:35 char:14
+     Set-HardDisk <<<<  -HardDisk $temp -CapacityKB $newValue -Confirm $false
    + CategoryInfo          : WriteError: (:) [Set-HardDisk], ParameterBinding
   Exception
    + FullyQualifiedErrorId : ParameterBindingFailed,VMware.VimAutomation.ViCo
   re.Cmdlets.Commands.VirtualDevice.SetHardDisk

I have then added a persistence flag, but then it asks for a datastore flag.  I added that and then it says there is no positional parameter for False.

I am beginning the think that the -confirm flag is broken, but I'd like to get some additional input.  Thanks for your help.

[LucD · Accepted solution]

I think you should use

Get-Harddisk -vm $hostname|where {$_.name -eq "Hard disk 1"}|Set-Harddisk -CapacityKB $value -Confirm:$false

That's how you pass a value to a switch parameter.

If you have a blank in between, the cmdlet will interprete this as a new parameter value ($false in this case), but it doesn't know to which parameter the value should go.

[mattboren]

Hello, wprather-

I think that this is just a syntax issue.  To use the -Confirm parameter in cmdlets, you set the value by using a colon (:) and then the boolean, like "-Confirm:$false".  So, your line would be:

Get-Harddisk -vm $hostname|where {$_.name -eq "Hard disk 1"}|Set-Harddisk -CapacityKB $value -Confirm:$false

Does that do better for you?

Message edit by mattboren at 14:20:  doh -- I see now that LucD already answered

[wprather]

Thank you for the quick response.  That worked tons better.  It's amazing what doing things right will do for you.