I is in the process of testing MDT 2013 Update 1 with Windows 10 deployment and found that the settings I used for Windows 8/7 build and capture does not work any more..

I always use in my customsettings.ini:

DeploymentType=NEWCOMPUTER

DoNotCreateExtPartition = YES

Just for creating 1 partition for my capture image.

In MDT 2013 Update 1 there is a different “Format and Partition Disk” disk layout.

The error:

The DoNotCreateExtPartition = YES is being ignored

Change “Format and Partition Disk” step in the Task Sequence to:

Now it is working: