Using a custom kernel and loader.o
From NAS-Central Buffalo - The Linkstation Wiki
Plenty of other people have already written how to's. You must have udev installed or the 2.6 kernel will not work. Check out this page on Migrating to the 2.6 kernel. Other useful pages are How to apply a kernel patch and this article on compling a kernel
Download the vanilla kernel source, untar it, and move into the source directory.
wget ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.15.tar.bz2 tar xvjf linux-2.6.15.tar.bz2 cd linux-2.6.15
Download the latest kernel patch. The patch should support both kurobox and kuroboxhg. Please report any changes needed to config files or any bugs you find on the forums (remember to include the type of box you are running along with any supporting information. The more information the better).
Whatever patch you use, you need to untar it and apply it. You may need to adjust the name of the patch.
tar xvjf kurobox-patch-2.6.15.tar.bz2 patch -p1 < kurobox-patch-2.6.15.patch
Next we need to configure the kernel. There is a basic configuration with each patch. For the Kurobox HG do this:
cp config_kuroboxhg .config
For the standard Kurobox do this:
cp config_kurobox .config
If you want to use the standard kernel type this:
If you want to customize your kernel type this:
Make the kernel and make and install the modules
make vmlinux modules modules_install
Loader.o needs a binary of the new kernel. We'll convert our new kernel and put the new kernel in /boot
objcopy -O binary vmlinux /boot/vmlinux-2.6.15-kurobox
Change to /boot
If you don't have a copy of loader.o in /boot you should download a copy from the Gentoo downloads area. I'm not sure if this one works with the HG, but it does work with the standard Kurobox.
Sync the drive, load the kernel into memory, and jump to the new kernel.
sync;insmod loader.o kernel=vmlinux-2.6.15-kurobox
If your new kernel works you can setup the Kurobox bootloader (more on this later).