Grub Error 13

Onizuka · n00b Joined: 10 Feb 2004 Posts: 2

Gentoo noob here, doing my second Gentoo install, the first on my Athlon 1 Ghz machine. I did a stage 1 install, and everything apparently looked fine (yay!). I manually compiled the 2.6.1-gentoo-r1 kernel from gentoo-dev-sources. I've never really compiled a kernel before, so I tried to keep it pretty basic and only chose the things I knew were essential. When I try to boot into it from Grub, I get "Error 13: Invalid or unsupported executable format". Ok, well at least I know I've set up Grub correctly, because I'm getting this far in the first place.

I followed the handbook instructions for installing the kernel. I did the following:

emerge gentoo-dev-sources
then made sure /usr/src/linux was right (it was)
cd /usr/src/linux
make menuconfig

when done, saved the config
then per the config, did make && make modules_install
(from the "For other systems, 2.6 kernel" - is this right or should I follow the 2.4 steps with the make dep and make bzImage?)

then cp vmlinux /boot/kernel-2.6.1-gentoo-rc1
cp System.map /boot/System.map-2.6.1-gentoo-rc1

in my make.conf i'm using CHOST="i686-pc-linux-gnu" and
CFLAGS="-O3 -march=i686 -funroll-loops -pipe -fomit-frame-pointer"

...uh oh, just saw the athlon option for -march - should I be using this instead?

Anyway I also made sure to pick Athlon/K7/Duron whatever option when configuring my kernel. Any ideas what I'm doing wrong?

FreeFly42 · l33t Joined: 03 Nov 2003 Posts: 848 Location: Houston, TX

You should be using the -march=athlon CFLAG. Or, just to be safe, you could try the -mcpu=athlon instead. Also make sure you have support for ELF binaries in the kernel (this is most likely the problem). You should probably include support for AOUT and MISC binaries also:

FreeFly42 · l33t Joined: 03 Nov 2003 Posts: 848 Location: Houston, TX

In make menuconfig:

Skystorm · Posted: Wed Feb 11, 2004 4:06 am Post subject:

Hi everybody,

I am in the process of installing Gentoo on my laptop (already done that before on a desktop computer) and now I have the very same problem.

The laptop uses a Mobile Celeron 800 (Coppermine), so I am pretty sure my march-flag ist set correctly to "pentium3" (but I already tried mcpu instead, no success).

I also have all the above options for executable file formats set in my kernel (gentoo-dev-sources-2.6.2), but nevertheless Grub gives me error 13...

I followed the steps in the Gentoo Installation Handbook; compiled the kernel with "make && make modules_install".

Thanks in advance,
Skystorm

FreeFly42 · l33t Joined: 03 Nov 2003 Posts: 848 Location: Houston, TX

Onizuka · n00b Joined: 10 Feb 2004 Posts: 2

I just finished doing a complete reinstall from stage 1 to fix my problem with using the wrong march type. Still have the same problem, but I'll try compiling the kernel with the steps listed under "for x86-based systems, 2.4 kernel"

so I do:
make bzImage modules modules_install ?

I heard that you shouldn't do make dep any more for 2.6. The reason I did just the make && make modules_install was that section was the only one that dealt with the 2.6 kernel, along with people's experiences in other places. Someone should update the install handbook to be a little more explicit

_________________
Now is the winter of your discontent!

FreeFly42 · l33t Joined: 03 Nov 2003 Posts: 848 Location: Houston, TX

Your make command was fine. The problem is an Athlon is an x86 CPU, so you should follow the instructions for an x86 compiling a 2.6 kernel. The compile/install process is: