How to change kernel boot options in GRUB 2

Question

In old GRUB, if I wanted to change boot options, I would use a line starting with the word kernel in "/boot/grub/menu.lst":

kernel /vmlinuz root=/dev/sda1 ro MY BOOT OPTIONS

Now since I'm using GRUB 2, I looked under "/etc/grub.d/10_Linux" for something similar, but I'm not even sure that's the right place to do this. If it is, please guide me. If it's not, guide me anyways.

Answer 1

Edit the file /etc/default/grub and set your parameter in GRUB_CMDLINE_LINUX. For example I have:

GRUB_CMDLINE_LINUX="dolvm"

I learned this from Ubuntu documentation. Other sources are either too hard to find, or I didn't dig deep enough.