After a long time, I am back. I have decided to update this blog more frequently. Since I am in hurry the only point to add here for today is
If firewall of your system is on, you cannot access your system's drive even with Administrative rights in Domain. Till you enable file/Printer sharing in your system. after enabling it, port 137 (Port for UNC) will be opened in your system and administrator or anybody with proper rights can easily access your system with \\SYSTEM-NAME\C$ etc.