Today I set up my System Center 2012 Configuration Manager R2 Preview Lab, and wanted to have a look with operating System deployment and unknown Computer Support. I’ve never used unknown Computer Support for OSD, thus I deployed the Task sequence as a required, because I always use this for other collections than the unknown Computer.
After booting via PXE the following message appears:
“Configuration Manager – Mandatory Task Sequence Warning”

When you deploy the Task sequence as available, this message is not shown, and you will be prompted to choose which Task sequence should be applied. This procedure is nothing new to SCCM 2012, but it was to me 🙂

Martin