On 06/01/2013 06:50 AM, Jose Lopez wrote: > Hi Jonathan, I'm very interested in learning CLI from Grub, never done > it before and I,m pretty new to (advance CLI) as I would look at it. is > there a link or a tut that you can point me to.
I prefer to learn by doing, and by reading the docs that come with the product. I generally do not trust web tutorials very much! So http://www.gnu.org/software/grub/manual/grub.html and typing the commands info grub and/or info grub-install and reading the scripts under /etc/grub.d/ was enough. There are also tutorials out there, such as https://help.ubuntu.com/community/Grub2 but I have not used them. HOWEVER, in this case, learning enough to do what we were discussing (changing the kernel boot parameters to add something like mem=512MB nosmp temporarily for test purposes) is pretty trivial. Here it is, step by step: 1. Power on the machine. 2. If necessary, hold down the Shift key (this makes the Grub menu display even if the Grub config is set to hide it). 3. Once you see the Grub menu, press the space bar. (This stops the countdown to booting a default menu entry). 4. If necessary, use the up and down arrow keys to select the entry you want to boot (usually the one labelled "Ubuntu", which will be the default, unless you did something creative with your configuration). 5. Type 'e' to edit that entry. (There is a hint on screen about this). 6. Find the line that starts with "linux". Use the arrow keys to move to the end of that line. 7. Type in the parameters you want to add, in this case mem=512M nosmp 8. Press ctrl-x to boot the (temporarily) modified entry. (There is a hint on screen about this). For a list of all the kernel parameters and what they do, see https://www.kernel.org/doc/Documentation/kernel-parameters.txt although that is a rather long and overwhelming document! Jonathan -- Lubuntu-users mailing list [email protected] Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/lubuntu-users
