Problem with Drive letter for Windows partition in WinPE

Hi,

I hope this is an easy one. Nevertheless I have not been able to find a solution on this forum or elsewhere.

I use default setup in MDT for partitioning disk 0. I have disabled both BitLocker task sequences, as we do not need them.

When I deploy a captured image in UEFI mode, the targetdrive for Windows is not "C:", and some of my Copy scripts fails, as it assumes that Windows is installed on "C:". I guess it has something to do with the extra partition added in UEFI mode, and Windows changes to D: because it's "next available driver letter".

How can I either:

1. Permanently fix that Windows is C:?

2. Find the driveletter and use it in my .cmd scripts?

I would really appreciate your answer!