Its easy to move the USER PROFILE and PROGRAMDATA folder away from C:\ during Windows installation. Install Windows when you get to the area where it asks you to input a user name and password . On your keyboard hit these keys
CTRL + SHIFT +F3 this will get you to audit mode . There you could install updates , software whatever you want to do. Open up Command Prompt in Administrator ( Run As Administrator ) and put this in " cd \Windows\System32\Sysprep " ( without quotes ) and then hit the enter key then type in Sysprep.exe /audit /reboot /unattend:D:\whatevername.xml . The D:\ is the location of the xml file . To do this make sure you have formatted the 2nd hard drive or partition.
Open notepad add this section in and save as a xml file
d:\Users
d:\ProgramData
Note: You could change processorArchitecture="amd64" to " x86 " for 32 bit OSes and source="wim:E:/sources/install.wim#Windows 7 ULTIMATE" to which ever version you have and drive letter your installing from.
Once the PC reboots it will reboot to the AUDIT MODE. You would want to get out of it . To do so you would do this check that System Cleanup Action is set to OOBE, and Shutdown Options set to Reboot. and this will allow you to get back to Completing your Windows installation. If done correctly you should see two new folders inside your D:\ or which ever drive you moved your PROFILES to .
Created by DaemonCantor and Adam