grub

If you use grub, there are three steps to enable console redirection over serial; these steps all involve editing the grub configuration file:

If you are using Red Hat Linux, the grub file is /etc/grub.conf.

If you are using SUSE Linux, the grub file is /boot/grub/menu.1st.

Note – On Red Hat Linux systems, the file /etc/grub.conf might be a symbolic link to the file /boot/grub/grub.conf.

1.Pass the proper console parameters to the kernel.

2.Configure the grub menu system to redirect to the proper console.

3.Remove any splash images that would prevent the proper serial-console display.

For more information on the parameters, refer to the file kernel-parameters.txtin your kernel documentation.

For more information on grub, run the command info grub.

Note – If the arrow keys do not work through your remote serial concentrator, you can use the keystroke combinations of <CTRL+P> and <CTRL+N> to highlight the Previous and Next entry, respectively. Pressing Enter then boots that entry.

The parameter console=ttyS0 tells the system to send the data to the serial port first. The parameter console=tty0 tells the system to send the data to the KVM second.

64 Sun Fire V20z and Sun Fire V40z Servers, Server Management Guide • May, 2004

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Sun Microsystems V20Z, V40z manual Grub