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Making the CentOS 6 Boot Splash Screen More Verbose

August 22, 2011 9 Comments RSS Feed

Making the CentOS 6 Boot Splash Screen More Verbose

CentOS 6 comes with a splash screen that displays a progress bar as it boots. This looks nice and might be cool on a desktop for some eye candy but I’d rather watch what is happening. You can hit any key during the boot process to make the boot splash screen disappear and display what its doing when its booting but that’s annoying and I’d rather it have it spit out all the gory details of what the server is doing automatically without human intervention.

Splash Screen

To make CentOS 6 display the details about what its doing while it boots, first make a backup of the file at /etc/grub.conf in case something goes wrong. Then open /etc/grub.conf in your favorite editor, and look for the line(s) that begin with ‘kernel’. At the end of them you’ll see ‘rhgb’ and ‘quiet’. You’ll want to remove both of those words from grub.conf. After saving your changes, reboot the server and you can see everything its doing when it starts up.

Here’s an example of a grub.conf that has ‘rhgb’ and ‘quiet’ in it:

<br />
title CentOS Linux (2.6.32-71.29.1.el6.x86_64)<br />
	root (hd0,0)<br />
	kernel /vmlinuz-2.6.32-71.29.1.el6.x86_64 ro root=UUID=c209fbd2-0738-4672-b225-6a5c09f65ad2 rd_NO_LUKS rd_NO_LVM rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us crashkernel=auto rhgb quiet<br />
	initrd /initramfs-2.6.32-71.29.1.el6.x86_64.img<br />

Posted in: CentOS


  • Marc Pope

    Nice tip!

  • Stephen Sala

    This is helpful, thanks.

  • Stephen Sala

    This is helpful, thanks.

  • Josh Hurd

    You can also hit the Up arrow on your keyboard during the boot process to switch to verbose output.
    Down arrow to switch back to the dumb progress bar.

  • Cris Mooney

    Bit of extra related info for those wandering through the quagmire of CentOS like me: in quiet mode that boot information normally shown on the screen is logged in the file /var/log/boot.log. So, if you are just trying to review the startup to diagnose some problem, you may just be able to examine that file and not mess with your kernel’s args.

  • Russ Thompson

    thank you, my server is across the room, grabbing for the keyboard is a mess.

  • Erik Bergman

    Thanks! I have been looking for this a long time now. :)

  • billdav

    I just did an upgrade from 6.3 to 6.4 and it hangs showing this progress bar. The progress bar gets to complete but then nothing.

    I reset the machine and got into grub. I don’t see rhgb or quiet on my kernel command line.

    I can’t tell what’s hanging.

  • schormannm

    Also helpful – thanks