I'm running GRUB 2.00 on a Gentoo Linux system.

I compile my own kernels manually, and then I install them in `/boot` with `make install`. I have the following kernels in `/boot` at the moment:

```
# ls -1 /boot/vmlinuz*
/boot/vmlinuz-3.7.4-gentoo-5
/boot/vmlinuz-3.7.4-gentoo-first
/boot/vmlinuz-3.7.4-gentoo-fourth
/boot/vmlinuz-3.7.4-gentoo-third

```

Running `grub2-mkconfig` results in the following output:

```
# grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-3.7.4-gentoo-third
Found linux image: /boot/vmlinuz-3.7.4-gentoo-fourth
Found linux image: /boot/vmlinuz-3.7.4-gentoo-first
Found linux image: /boot/vmlinuz-3.7.4-gentoo-5
done

```

If I now read the resulting `/boot/grub2/grub.cfg` file, I notice that the following entries have been created:

* A main default entry which starts `vmlinuz-3.7.4-gentoo-third`
* A submenu with the all the other entries (including recovery ones), in the same order as the `grub2-mkconfig` command

The problem is that at boot time I'd like to load by default the fifth revision of my kernel (`vmlinuz-3.7.4-gentoo-5`), not the third one (`vmlinuz-3.7.4-gentoo-third`). I also prefer not to access the submenu for choosing the right kernel to load.

How can I change this behaviour? How can I tell GRUB that I want to run the fifth revision of my kernel by default and not the older third revision? In general, how can I change the default entry line to match the kernel I want and not a seemingly random one picked by GRUB?

I also tried putting the following lines in `/etc/default/grub`:

```
GRUB_DEFAULT=saved
GRUB_SAVEDEFAULT=true

```

This doesn't fix the problem the way I desire. But at least GRUB seems to remembers the latest kernel I booted from and automatically selects it from the submenu. It's just that I don't like to access the submenu.