console=ttyS0,19200
Note: The entry that begins with kernel /vmlinuz is shown with a line break after console=tty1. In your file, the entire entry must all be on one line.
The following examples show the original content of the /boot/grub/grub.conf file and the content of this file after modification.
Original /boot/grub/grub.conf contents
#grub.conf generated by anaconda
#
#Note that you do not have to rerun grub after making changes to this file
#NOTICE: You have a /boot partition. This means that
#all kernel and initrd paths are relative to /boot/, eg.
#root (hd0,0)
#
#
#boot=/dev/hda
default=0
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
title Red Hat Enterprise Linux ES
title Red Hat Enterprise Linux