As I have quite some trouble every time I need grub via serial console, here’s just my personal reminder on how to do it right:
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# cat /boot/grub/grub.conf serial --unit=0 --speed=38400 terminal --timeout=15 console serial title hardened-sources-2.6.20-r1 root (hd0,0) kernel (hd0,0)/boot/vmlinuz-2.6.20-hardened-r1 root=/dev/hda1 console=ttyS0,38400 console=tty0 |
Additionally the agetty entry for ttyS0 in /etc/inittab needs to be uncommented and changed accordingly to the serial speed
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# cat /etc/inittab | tail s0:12345:respawn:/sbin/agetty 38400 ttyS0 vt100 |