So, this is an inversion of the classic question: "Why is my terminal blank on boot?" -- How do I make my terminal blank on boot?
I'm creating a Debian Wheezy system with GRUB as the boot loader that will output video over nodm ("no display manager" -- requires no user login). I don't want users to see any boot information on their video screen at startup.
At the display manager level I use nodm and that seems to work great.
At the GRUB level I'm using these params in /etc/default/grub (and then running update-grub):
GRUB_DEFAULT=0 GRUB_FORCE_HIDDEN_MENU=true GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=0 GRUB_TIMEOUT_STYLE=hidden GRUB_DISTRIBUTOR= #GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="silent splash loglevel=3 console=tty2 earlyprintk=tty2" GRUB_CMDLINE_LINUX=""
And for inittab I use a custom program:
#!/bin/sh cat -
1:2345:respawn:/sbin/getty 38400 -i -w -n -l /usr/bin/nothing tty1
Then finally I'm tweaking the BIOS settings as much as it will allow me.
The log output I still see appears to be GRUB related, it's roughly as follows:
"Booting GNU/Linux .... " <-- I think this is the GRUB option at index 0 that is loading "Decompressing the kernel" "Booting the kernel" <-- not sure if these are GRUB or Kernel related?
Does anyone have some advice on purging these final bits of text?
This link indicates those final lines may require a kernel patch to remove: