Logging in as root

I've been trying to log-in with root by restarting and putting root as the user name and also at the terminal prompt typing "su"...but both times I try entering passwords that fail to have me logged in...I don't know what the password is, only for the account I normally use...is there a "work around" for this one? Thanks in advanced for any useful response, smc smc

• › run bash commands as root
• › [Solved] how to run sh script when logged in as a root
• › [Solved] Can't logg in as admin in xubuntu .The others users can.
• › permission errors in linux error code 3
• › -bash-3.2 terminal in redhat
• › it seems like you can't understand me. what i
• › how to execute these commands