Surface Pro 4 Sysprep WinPE Help

Hi, im currently close to finishing sysprep on the surface pro 4. Im using winpe and StartNet.cmd to run a script, specifically the following script;

@ECHO OFF :: Geovert :: 2016-03-09 :: Deploy Windows 10 wpeinit echo select disk 0 > diskpart%ID%.txt echo clean >> diskpart%ID%.txt echo convert gpt >> diskpart%ID%.txt echo create partition efi size=200 >> diskpart%ID%.txt echo assign letter="s" >> diskpart%ID%.txt echo format quick fs=FAT32 >> diskpart%ID%.txt echo create partition msr size=128 >> diskpart%ID%.txt echo create partition primary >> diskpart%ID%.txt echo assign letter="c" >> diskpart%ID%.txt echo format quick fs=NTFS >> diskpart%ID%.txt echo ** Executing diskpart script... diskpart /s diskpart%ID%.txt del diskpart%ID%.txt echo select disk 1 > diskpart%ID%.txt echo select partition 1 >> diskpart%ID%.txt echo assign letter="g" >> diskpart%ID%.txt echo ** Executing diskpart script... diskpart /s diskpart%ID%.txt del diskpart%ID%.txt dism /apply-image /imagefile:g:\efisys.wim /index:1 /ApplyDir:s:\ dism /apply-image /imagefile:g:\OSimage.wim /index:1 /ApplyDir:c:\ bcdedit /set {bootmgr} device partition=s: bcdedit /set {memdiag} device partition=s: bcdedit /set {default} device partition=c: bcdedit /set {default} osdevice partition=c: Bcdedit /set {FWbootmgr} displayorder {Bootmgr} /addfirst wpeutil shutdown

from a USB with both my .wim files on the USB.
Strangely, typing each command from the script in WinPE manually will work every time without fail, however when running the automated script with the same commands once it hits the line to assign letter 'c' the error is thrown: virtual service disk error: letter is already assigned.
Once the script is typed manually at least once the automatic script will work fine after, however if i boot into gparted and remove all partitions or if i do a internal secure wipe with parted magic the script will not run automatically unless i type the commands manually again at least once, in which the automated script will run thereafter.
I have noticed in gparted if i delete the partitions THEN make the drive ntfs i can then run the script automatically fine without having to type it manually. Im confused as to why typing the commands manually works but the script automatically does not even though they're the same commands.

Don't you have to select the partition before assigning a letter?

In your script you create the partitions but assign letters without selecting the partition. More like this perhaps..

echo select disk 0 > diskpart%ID%.txt
echo clean >> diskpart%ID%.txt
echo convert gpt >> diskpart%ID%.txt
echo create partition efi size=200 >> diskpart%ID%.txt
echo select partition 1 >> diskpart%ID%.txt
echo assign letter="s" >> diskpart%ID%.txt
echo format quick fs=FAT32 >> diskpart%ID%.txt
echo create partition msr size=128 >> diskpart%ID%.txt
echo create partition primary >> diskpart%ID%.txt
echo select partition 3 >> diskpart%ID%.txt
echo assign letter="c" >> diskpart%ID%.txt
echo format quick fs=NTFS >> diskpart%ID%.txt

lx07 said:

Don't you have to select the partition before assigning a letter?

In your script you create the partitions but assign letters without selecting the partition. More like this perhaps..

echo select disk 0 > diskpart%ID%.txt
echo clean >> diskpart%ID%.txt
echo convert gpt >> diskpart%ID%.txt
echo create partition efi size=200 >> diskpart%ID%.txt
echo select partition 1 >> diskpart%ID%.txt
echo assign letter="s" >> diskpart%ID%.txt
echo format quick fs=FAT32 >> diskpart%ID%.txt
echo create partition msr size=128 >> diskpart%ID%.txt
echo create partition primary >> diskpart%ID%.txt
echo select partition 3 >> diskpart%ID%.txt
echo assign letter="c" >> diskpart%ID%.txt
echo format quick fs=NTFS >> diskpart%ID%.txt

Hmm i definately did not think of that, ill test this tomorow and return with an answer. With regard to that section of the script i got it from here:

https://technet.microsoft.com/en-us/...(v=ws.10).aspx

Hi lx07, appreciate your help. Unforunately im still getting the same error. See my attached image

Im really unsure why typing it manually works but the script does not unless i use gparted to make the disk NTFS before running the script, however typing the commands manually i dont need to use gparted at all...

Is there something wrong with my script?

rabwick said:

Is there something wrong with my script?

Not that I can see. Perhaps someone else can.

I saw this old thread but it didn't seem to go anywhere. Diskpart error when imaging Win7 - Unattended Windows 7/Server 2008R2 - MSFN

The idea wasn't bad though. Break up the script and put 'pause' in. Then perhaps you could put some diskpart "list volume", "list partition" "list disk" or the other diagnostic commands in your TechNet thread.

It seems that C is already assigned when the script runs but I can't think why. Could be you need to select the volume and remove the letter.

I was wrong about needing "select partition" by the way. When you create a partition it automatically gets focus so your script was OK in the first place.