[SOLVED] How to change the Grub2 to show the available kernel to boot?

MarcosPauloBR · 08-23-2011, 07:51 AM

Hi people!

I was a Slack user, and Lilo always shows me the kernels that I put on the lilo.conf on the boot time.

How can I do the same thing on Grub2?

I want to debug some custom kernels, and with this option I can do this on Ubuntu!

Thanks for your time!

syg00 · 08-24-2011, 01:09 AM

If update-grub doesn't do it automatically you'll need either create a custom menu entry in /etc/grub.d or name your kernel such that update-grub finds them.
I'm not sure if it's documented anywhere, but I suspect a name starting with vmlinuz- will be found.

cascade9 · 08-24-2011, 01:56 AM

IIRC with 9.10 and later versions of ubuntu, the grub menu does not display if you only have 1 OS installed.

If you hold shift duing booting, you should see the grub menu. There should be some way to get grub to display without holding any keys down, but I dont know it offhand.

Running 'upgdate grub' should give you the option to boot to any kernels in your system from grub2 (but you probably already knew that, right?)

Larry Webb · 08-24-2011, 05:22 AM

If you are using a single os change hidden menu value from "true" to a time you want to see at boot. In ubuntu this needs to be done in /etc/default/grub.

MarcosPauloBR · 08-24-2011, 12:21 PM

Thanks for all!

Cascade, its exactly what I want =D

I found this site too:
http://maketecheasier.com/mastering-...way/2009/11/19

Thanks for all!

cascade9 · 08-25-2011, 04:29 AM

No problem, glad it helped.