Why do you map a drive completly to the image you want to deploy?
Normally you only enter \\servername\folder for the path.
And there is a known issue with Map to prefered server action in x64 boot.wim. Are you using x86 or x64 boot.wim?
This is just a result of me selecting the image in the 'Deploy Image' action:
As far as I can tell I am using the 32 bit boot.wim file, when I run a dir command in the PE I can only see a program files directory and no program files(x86). Is there an easy way to find out from within the management console?
I can confirm I am using the 32bit vesion of WinPE.
I don't think you can use d$ in you UNC path