Issue

• Installing Red Hat enterprise Linux using vnc option does not support text mode.
• Start Installation of RHEL OS using installation media or kickstart

• Send installation screen to remote vnc client using 'vnc' or 'vncconnect' option at boot prompt

• Use 'text' option at boot prompt for text mode installation

• Installer automatically switches to graphical mode
• Detailed documentation for VNC based installation can be found at below links:

http://fedoraproject.org/wiki/Anaconda/Kickstart#vnc

http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html-single/Installation_Guide/index.html#VNC_Whitepaper-installation