Create VHD (PowerShell version)

In an attempt to learn PowerShell I've updated the CreateVHD script. It should now be saved as CreateVHD.ps1. The same parameters as before are required:

CreateVHD.ps1 {VHD Name} {Size in GB} {Configure BootFromVHD : YES}

A new feature of this version is that it creates a batch file to remove the GUID entry from the boot process using BCDEDIT. The new file will be named Delete - {VHD Name}.cmd.

See previous post for more information: http://matt-gelder.blogspot.com/2012/02/script-to-create-vhd-populate-it-from.html
_________________________________________________________________________

#Define Parameters Section
#-------------------------
Param
(
[String]$VDisk,
[INT16]$DiskSizeGB,
[String]$BootFromVHD
)
#Variables section
#-----------------
$WimFile = "E:\Sources\install.wim"
$ImageIndex = 1
$TargetDrive = "C:"
$VHDFolder = "\VMs"
#Verify parameters meet conditions
#---------------------------------
if
($VDisk -eq "")
{"You need to specify a name for the Virtual Disk file {Parameter 1}"
EXIT
}
ELSE
{
$VDiskFP = "$TargetDrive$VHDFolder\$VDisk.vhd"
"Virtual Hard Disk Name: $VDiskFP"}
if
($DiskSizeGB -eq "")
{"You need to specify a disk size in GB {Parameter 2}"
EXIT
}
ELSE
{
$DiskSizeMB = $DiskSizeGB * 1024
"Disk size is $($DiskSizeMB)MB"
}
if
($BootFromVHD -eq "")
{"Boot from VHD will not be enabled"}
ELSEIF
($BootFromVHD -eq "YES")
{"Boot from VHD will be enabled"}
ELSE
{"Boot From VHD if specified must be set to Yes {Parameter 3}"
EXIT
}
if
((Test-Path -path $VDiskFP) -eq $True)
{
"Error: $VDiskFP already exists"
EXIT
}
#Create the Diskpart-create.txt file
#-----------------------------------
$File = New-Item -type file "Diskpart-create.txt" -Force
add-content $file "create vdisk file=$VDiskFP maximum=$DiskSizeMB type=expandable"
add-content $file "select vdisk file=$VDiskFP"
add-content $file "attach vdisk"
add-content $file "create partition primary"
add-content $file "format quick FS=NTFS label=$VDiskFP"
add-content $file "assign letter=v"
add-content $file "active"
diskpart /s Diskpart-create.txt
del diskpart-create.txt
#ImageX
#------
"Applying Windows image No. $ImageIndex from $WimFile to $VDiskFP"
.\imagex /apply $WimFile $ImageIndex V:
bcdboot V:\Windows /s V:

#Create the Diskpart-detach.txt file
#-----------------------------------
$File = New-Item -type file "Diskpart-detach.txt" -Force
add-content $file "select vdisk file=$VDiskFP"
add-content $file "detach vdisk"
diskpart /s Diskpart-detach.txt
del diskpart-detach.txt
#Create the Boot From VHD Menu Option
#------------------------------------
IF
($BootFromVHD -eq "YES")
{
$VdiskBCD = ('"{0}"' -f $VDisk)
$VdiskBCD = " bcdedit /copy {current} /d $VdiskBCD "
$VdiskBCD = ('"{0}"' -f $VDiskBCD)
$VdiskBCD = "cmd /c $VdiskBCD > GUID.txt"
$File = New-Item -type file "RunBCD.cmd" -Force
add-content $file "@echo off"
add-content $file "$VdiskBCD"
.\RunBCD.cmd
del .\RunBCD.cmd
$GUID = get-content .\GUID.txt
$GUID = $GUID -split "to ", 2
$GUID = $GUID -split ".", 0, "simplematch"
$GUID = $GUID[1]
del .\GUID.txt
cmd /c "bcdedit /set $GUID device vhd=[locate]$VHDFolder\$Vdisk.vhd"
cmd /c "bcdedit /set $GUID osdevice vhd=[locate]$VHDFolder\$Vdisk.vhd"
cmd /c "bcdedit /set $GUID detecthal on"
cmd /c "bcdedit /default $GUID"

#Create a batch file to remove the GUID from the boot config
$File = New-Item -type file "Delete - $Vdisk.cmd" -Force
$DeleteGUID = "bcdedit /delete $GUID"
$DeleteGUID = ('"{0}"' -f $DeleteGUID)
$DeleteGUID = "cmd /c $DeleteGUID"
add-content $file "$DeleteGUID"
}