MDT is very flexible in the ability to define and use variables inline and in different locations. However, this also means that if you forget to assign a variable a value it may lead to unintended consequences that you might not easily discover. There are many different places in which you could find references to a variable:
- Task Sequence Variables– You can use variables in a task sequence in two ways:ZTIGather.xml –
This file defines the variables and lists that are declared by MDT for
the Gather step of the Task Sequence to use and process for rules. It
also defines whether variables are re-writable.
- Directly used in the command line with the notation %variable%
- As a condition on a particular step in the task sequence
- Within MDT scripts variables are called in different ways
- In VBScripts you may see a reference to an oEnvironment.Item or an oEnvironment.ListItem
- In Powershell you may see references to tsenv: or tsenvlist:
- In cmd and batch scripts you may see references to %variable%
- In a CustomSettings or other INI file you could see references to variables in the “Properties=” field
Finding All References to MDT Variables in a Deployment Share: VariableDocumentor v1.0
Aly Shivji