Re: Script to Remove HDDs other than HDD1 from VM and re-add it back.

On new-harddisk why are you specifying the actual disk path? Why not specify just the datastore?

Try this to get the datastore name and put it on the same datastore:

$HDDfile = Get-HardDisk -VM $vmname | Where-Object {$_.Name -ne 'Hard Disk 1'} | select Filename

$datastorename =$HDDfile.split("[]")[1]

Get-HardDisk -VM $vmname | Where-Object {$_.Name -ne 'Hard Disk 1'} | Remove-Harddisk -Confirm:$false

   New-HardDisk -VM $vmname -Datastore $datastorename

You also have to specify the size of hte disk.  so -capacityGB.  Don't know if they will all be same size or not but you can get that info as well and pass it or hardcode it.