![]() GRUBCMDLINELINUXDEFAULT='console=tty0 console=ttyS0,38400n8' Now we need to tell grub where is the console and what command to start in order to enable the serial console (Note as above for Linux kernel, one can append multiple input/output terminals in grub e.g. Mount the CentOS ISO on my elected Installation System (stivinstall ) # mount -o loop /mnt/CentOS-7-x866-01.iso /var/So, in the boot.msg, remove the ^Xsplash.lss line and delete the boot.cat (will be re-created later) isolinux# cat boot.msg splash.lss - Press the 0107 key to begin the installation process. Modify CentOS 7 boot image to get output on Serial Console By default, the boot ISO of RHEL 7/CentOS 7 will redirect its output to Graphical Console, so that needs to be modified to have Output directed to the Serial Console (VSP).
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