The task sequence has been suspended

The task sequence has been suspended. Litetouch has encoutered an Environment Error (Boot onto WinPE!) If booting from a USB flash Disk, please remove all drives before retrying. Otherwise, ensure the hard disk is selected first in the boot order of the BIOS. Reboot WinPE (Close all windows) to resume.

If you get this when starting a deployment task, there is no way to get further before you solve the issue. The error message itself doesn’t help that much in troubleshooting and finally solving the issue. Now, the issue is that this machine has been deployed with an MDT task sequence before but the task sequence didn’t finish and the MDT files did not get cleaned up. When you start the new deployment task for a cetain machine and MDT detects that there are still files from a previous deployment on the hard disk it will pop up this error. To avoid getting this error you should always press the finish button on the status screen at the end of a deployment. When the finish button is pressed, MDT will run a clean up script and remove all files. But you now have this error and want to continue. You can either remove all the MDT files manually from the system by booting into the existing Windows installation again, but since you are redeploying this machine chances are high that you can just remove the partitions of this machine and continue your installation. When youhave this error on your screen; press the F8 button to open a cmd box and use diskpart to remove existing partitions of this machine. Reboot the computer and run the task again, MDT will now move on and deploy Windows to this machine.