I’m trying to build a machine. I insert my boot media. The machine boots and into PE and the Task Sequence Wizard runs. I click “Next >” on the “Welcome to the Task Sequence Wizard” screen.
However, on the “Select a Task Sequence” screen I’m only seeing one Task Sequence as being available despite there being several that should be available.
Check that the Task Sequence is Advertised to the relevant Collections. As well as Advertising your Task Sequence to the “All Unknown Computers” Collection you may want to Advertise Task Sequences to other Collections.
For example the first time you build a machine that isn’t in the ConfigMgr database you’ll see all of the Task Sequences advertised to the “All Unknown Computers” Collection on the “Select a Task Sequence” screen.
If you then try to rebuild the machine without deleting it from the relevant OS Collection that relates to the OS on the machine (for example “All Windows XP Systems”), first, you will only see the Task Sequences advertised to the relvant OS Collection already on the machine (in this case the “All Windows XP Systems” Collection), on the “Select a Task Sequence” screen.
In this case as a result of different Task Sequences being advertised to the “All Windows XP Systems” Collection than the “All Unknown Computers” Collection, only those Advertised to the “All Windows XP Systems” Collection were displayed as the machine had been built as XP.