I'm trying to control GRUB2 over a serial connection, but I can't seem to get it to work or find any real comprehensive guides. I tried once, but was unable to get any output, and had to reinstall ...
I added console=ttyS0,57600n8 to my kernel command line. I get the normal boot messages until this [ 5.123106] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null) Begin: ...
I use RHEL6 (with GRUB and upstart from Ubuntu) and want to put boot messages on my normal VGA console as well on serial port. I got GRUB to put messages on one of them, but not on both at same time. ...