As you can notice, when you try to map “Home Directory” folder on the letter “B”, there is no possibility for doing this from ADUC’s user properties window:
The resolution for this is making that change using powershell:
Set-QADUser test.test -HomeDrive “B:”
Or using dsmod:
dsmod user “CN=Test Test,OU=people,DN=domain,DN=pl” -hmdrv “B:”
After that operation, the field that is responsible for “Home Directory” drive will be left blank, despite of that you will be able to see that setting in powershell:
The Home Directory folder should now be mapped on “B” letter.