I am working on a answer file [autounattend.xml] I would like a piece of code

[Rbcc56]

I would a piece of to put into my autunattend.xml and unattend.xml to search through all drives except a,b and c.  This code will set a variable to %Drive and then run a batch file called apps,utils and batches then run z.cmd inside a folder on  app,utils and batches.  how is done?  Show in code!

[Tripredacus]

First of all, people typically don't respond well to demands to give answers or do all of the work for you. Second, it would be good for you to explain how exactly you are designing your deployment workflow.

Since you mention using both XML types (one for install, one for sysprep) it leads me to believe that you are making a deployment image. I have never personally found it useful to add any scripting into Autounattend.xml to begin with because that is only for creating the base installation. It is different if you also intend to use it for a recovery scenario, but in that case you wouldn't end up using two XML files anyways. I've only operated in a structured deployment environment where the need for determining drive letters or scanning for volumes wasn't needed. Nevertheless, for post deployment customizations I would use FirstLogonCommands in the oobeSystem phase to specify a single .cmd file. 

Then within that .cmd file that would be where I would include the scripts. But as I said, I never would need to have to scan for volumes and if I did have to do something like that, I would likely end up writing a program to handle that type of task so that I can leverage WMI and Win32 API calls.