Dynamically set Computer name of Physical and Virtual Machines via CustomSettings.ini

I needed a clean way to set the hostname of physical and virtual machines in MDT via the customsettings.ini file. Sure I could use %SerialNumber% variable but if I deploy onto a virtual machine I would hit an error because the Serial Number of a VM tends to be too long for a hostname.

So rather than write a script and have additional steps in the Task Sequence I got the desired outcome with a few extra lines in the customsettings.ini:

Here’s how:



[VM-TRUEset ]




The first line “Subsection=VM-%ISVM%” is added to the Default section of the customsettings.ini file. This line essentially tells ZTIGather to process another section in the ini file. The section we want to process is either VM-TRUE or VM-False. Which section is processed will depend on the in-built %IsVM% Task Sequence Variable.

The next part of the solution is to set the OSDComputerName variable.

For physical machines we simply user the %SerialNumber% variable. In the example I prefix the hostname with PH.

For Virtual machines we use the MAC address instead of the serial number. This ensures we stay within the 15 character hostname limit. We cannot use the %MACADDRESS001% variable directly, we first need to remove the “:” separators. To do this we can get ztigather to process code directly from the customsettings.ini. Anything inside “#” is treated as code, in our example we are simply using the Replace function to remove the “:”.

This works with an SCCM OSD Task Sequence too (with MDT integration).