Comments on: Tweaking grub settings : Ubuntu (5.10 / 6.06.1 / 6.10) http://ubuntu-tutorials.com/2006/12/29/tweaking-grub-ubuntu-510-6061-610/ Enhancing your Ubuntu experience! Thu, 02 Feb 2012 10:29:43 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: digitalpbk http://ubuntu-tutorials.com/2006/12/29/tweaking-grub-ubuntu-510-6061-610/#comment-9953 digitalpbk Sun, 08 Nov 2009 06:38:15 +0000 http://ubuntu-tutorials.com/?p=231#comment-9953 On ubuntu 9.1 and above the instructions have changed <a href="http://digitalpbk.com/2009/11/changing-default-boot-os-grub-ubuntu-910" target="_blank">http://digitalpbk.com/2009/11/changing-default-bo...</a> On ubuntu 9.1 and above the instructions have changed http://digitalpbk.com/2009/11/changing-default-bo…

]]> By: marc http://ubuntu-tutorials.com/2006/12/29/tweaking-grub-ubuntu-510-6061-610/#comment-8662 marc Wed, 06 May 2009 13:48:18 +0000 http://ubuntu-tutorials.com/?p=231#comment-8662 >>>> ro, quiet and splash - these are optional but load the pretty splash screen that you see at boot time. yes and no as written by mcduck in <a href="http://ubuntuforums.org/archive/index.php/t-902308.html" target="_blank">http://ubuntuforums.org/archive/index.php/t-90230...</a> : "splash" enables/disables the graphical boot. "quiet" reduces the amount of messages outputted to screen during boot. If the splash is enabled but you remove "quiet" you'll get the graphical boot _with_ scrolling boot messages. :o . Remove "splash" and you get the traditional Linux boot-up with loads of scrolling text. and i will add that the "ro" option is to mount the boot partition as "read-only" at boot time (only) >>>> ro, quiet and splash – these are optional but load the pretty splash screen that you see at boot time.

yes and no
as written by mcduck in http://ubuntuforums.org/archive/index.php/t-90230… :

"splash" enables/disables the graphical boot. "quiet" reduces the amount of messages outputted to screen during boot. If the splash is enabled but you remove "quiet" you'll get the graphical boot _with_ scrolling boot messages. :o . Remove "splash" and you get the traditional Linux boot-up with loads of scrolling text.

and i will add that the "ro" option is to mount the boot partition as "read-only" at boot time (only)

]]> By: philb http://ubuntu-tutorials.com/2006/12/29/tweaking-grub-ubuntu-510-6061-610/#comment-7873 philb Tue, 17 Feb 2009 17:51:53 +0000 http://ubuntu-tutorials.com/?p=231#comment-7873 what setting in menu.lst do i need to centralise the splash screen? when ubuntu boots up, the splash screen is to the right of the monitor but is fine when booted. what setting in menu.lst do i need to centralise the splash screen? when ubuntu boots up, the splash screen is to the right of the monitor but is fine when booted.

]]> By: CrayXMP http://ubuntu-tutorials.com/2006/12/29/tweaking-grub-ubuntu-510-6061-610/#comment-3400 CrayXMP Tue, 15 Jan 2008 16:21:46 +0000 http://ubuntu-tutorials.com/?p=231#comment-3400 Errata: 1_ /boot is a subfolder of the root partition /. The root for grub is then / and we type “find /boot/grub/stage1″. Sorry! Errata:
1_ /boot is a subfolder of the root partition /. The root for grub is then / and we type “find /boot/grub/stage1″.
Sorry!

]]> By: CrayXMP http://ubuntu-tutorials.com/2006/12/29/tweaking-grub-ubuntu-510-6061-610/#comment-3399 CrayXMP Tue, 15 Jan 2008 16:19:07 +0000 http://ubuntu-tutorials.com/?p=231#comment-3399 Quote: "root - this is where the root of the file systems is located." I think it is not but simply where grub is supposed to find its files. It is determined when we enter "find /path/to/stage1" using grub in a terminal on a LiveCD. It returns (hdx,y) which is now the root for grub, not the distro(s). Two cases: 1_ /boot is a subfolder of the root partition /. The root for grub is then /boot and we type "find /boot/grub/stage1". 2_ /boot is a separate partition from /. Then root for grub is /boot and we type "find /grub/stage1". Using the result, the command root (hdx,y) sets the root for grub. Now we can place grub's MBR on a hard-drive with "setup (hd0)" to be run by the BIOS or on its own partition with "setup hd(x,y) which then must be chainloaded first with another boot manager on (hd0) to be seen by the BIOS. Because the BIOS is only able to boot this one (first sector on first hd equals (hd0)). Just my 2 cents... Quote: “root – this is where the root of the file systems is located.”
I think it is not but simply where grub is supposed to find its files.
It is determined when we enter “find /path/to/stage1″ using grub in a terminal on a LiveCD. It returns (hdx,y) which is now the root for grub, not the distro(s).
Two cases:
1_ /boot is a subfolder of the root partition /. The root for grub is then /boot and we type “find /boot/grub/stage1″.
2_ /boot is a separate partition from /. Then root for grub is /boot and we type “find /grub/stage1″.
Using the result, the command root (hdx,y) sets the root for grub. Now we can place grub’s MBR on a hard-drive with “setup (hd0)” to be run by the BIOS or on its own partition with “setup hd(x,y) which then must be chainloaded first with another boot manager on (hd0) to be seen by the BIOS. Because the BIOS is only able to boot this one (first sector on first hd equals (hd0)).
Just my 2 cents…

]]> By: jon http://ubuntu-tutorials.com/2006/12/29/tweaking-grub-ubuntu-510-6061-610/#comment-508 jon Fri, 09 Feb 2007 19:54:26 +0000 http://ubuntu-tutorials.com/?p=231#comment-508 Oddly, my copy of Edgy (installed from the 6.10 Desktop CD) includes the line "root=dev/hdc1" but my copy of Feisty (from Herd 2 Alternate Desktop CD) has the UUID line. I only discovered this when, after cloning the drive and, without thinking, putting the new drive onto the primary controller instead of the secondary one where the old one had sat, Feisty booted fine but Edgy hung. (Feisty's grub is the main boot menu & chains to Edgy's grub if I select the right entry off the menu). Fortunately I had both systems set up to cross-mount each other's partitions as "/other" so I was able to boot Feisty, edit /other/boot/grub/menu.lst, reboot and everything was fine. Not often things work that well for me! One odd thing I noticed. The data in the Edgy 'automagic' section had both the hdc1 line *and* the UUID but update-grub had chosen the hdc1 line - causing the problem. My Feisty automagic section only contains the UUID line. Oddly, my copy of Edgy (installed from the 6.10 Desktop CD) includes the line “root=dev/hdc1″ but my copy of Feisty (from Herd 2 Alternate Desktop CD) has the UUID line.

I only discovered this when, after cloning the drive and, without thinking, putting the new drive onto the primary controller instead of the secondary one where the old one had sat, Feisty booted fine but Edgy hung. (Feisty’s grub is the main boot menu & chains to Edgy’s grub if I select the right entry off the menu).

Fortunately I had both systems set up to cross-mount each other’s partitions as “/other” so I was able to boot Feisty, edit /other/boot/grub/menu.lst, reboot and everything was fine. Not often things work that well for me!

One odd thing I noticed. The data in the Edgy ‘automagic’ section had both the hdc1 line *and* the UUID but update-grub had chosen the hdc1 line – causing the problem. My Feisty automagic section only contains the UUID line.

]]> By: Editing /boot/grub/menu.lst to change the GRUB boot menu « boff http://ubuntu-tutorials.com/2006/12/29/tweaking-grub-ubuntu-510-6061-610/#comment-507 Editing /boot/grub/menu.lst to change the GRUB boot menu « boff Tue, 16 Jan 2007 23:24:32 +0000 http://ubuntu-tutorials.com/?p=231#comment-507 [...] Here’s a helpful reference. And here’s what I did: [...] [...] Here’s a helpful reference. And here’s what I did: [...]

]]> By: lao http://ubuntu-tutorials.com/2006/12/29/tweaking-grub-ubuntu-510-6061-610/#comment-506 lao Thu, 04 Jan 2007 14:08:09 +0000 http://ubuntu-tutorials.com/?p=231#comment-506 Don't forget vga=791 for small fonts in console. My example: kernel /boot/vmlinuz-2.6.17-10-generic root=/dev/sda7 ro vga=791 acpi=off splash=verbose locale=pt_BR Sorry..my english is terrible..:D best regards, -- lao (Brasil - São Paulo/SP) Don’t forget vga=791 for small fonts in console.

My example:
kernel /boot/vmlinuz-2.6.17-10-generic root=/dev/sda7 ro vga=791 acpi=off splash=verbose locale=pt_BR

Sorry..my english is terrible..:D

best regards,
–
lao (Brasil – São Paulo/SP)

]]> By: dabaR http://ubuntu-tutorials.com/2006/12/29/tweaking-grub-ubuntu-510-6061-610/#comment-505 dabaR Sat, 30 Dec 2006 20:00:35 +0000 http://ubuntu-tutorials.com/?p=231#comment-505 In reply to hastesaver's question: If you remove the quiet option from the kernel line the messages will appear in the splash as they used to prior to Edgy. In reply to hastesaver’s question:

If you remove the quiet option from the kernel line the messages will appear in the splash as they used to prior to Edgy.

]]> By: TuxGirl http://ubuntu-tutorials.com/2006/12/29/tweaking-grub-ubuntu-510-6061-610/#comment-504 TuxGirl Sat, 30 Dec 2006 16:43:35 +0000 http://ubuntu-tutorials.com/?p=231#comment-504 As a side note, I think it's important to mention that, if you do manage to completely mess up your grub.conf file to the point that your machine won't boot, you can fix it by booting into a livecd (like the Ubuntu livecd or Knoppix or DSL or *something*), and then copying your backup grub.conf over while in there. In fact, this method is great whenever you do something to your system that makes it temporarily unusable. Nice work on the tutorials! One of these days I need to get one up on tweaking /etc/sudoers :) As a side note, I think it’s important to mention that, if you do manage to completely mess up your grub.conf file to the point that your machine won’t boot, you can fix it by booting into a livecd (like the Ubuntu livecd or Knoppix or DSL or *something*), and then copying your backup grub.conf over while in there. In fact, this method is great whenever you do something to your system that makes it temporarily unusable.

Nice work on the tutorials! One of these days I need to get one up on tweaking /etc/sudoers :)

]]>