%%textdomain fatdoghelp
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# How to temporarily boot with a different kernel

If you want to permanently replace the kernel please see [here](kernel.md).

First go [here](http://distro.ibiblio.org/fatdog/kernels/) and
download vmlinuz-x.x.x and kernel-modules.sfs-x.x.x,
where x.x.x is the kernel version that you want.
Vmlinuz is the actual kernel and kernel-modules.sfs contains the
kernel modules (drivers) that are built to work with it.
Keep the names; you don't have to rename them (although you can if you want to).
Place the new vmlinuz in your boot folder.  Make a note of where your kernel-modules.sfs is.

Then, in in your bootloader menu file (for grub it is menu.lst), add an entry that points to that
new kernel. Also, as part of that entry's boot parameters, specify an
**extrasfs parameter** (see details [here](boot-options-base.md)) that points to the downloaded kernel modules.

Then boot. It's that simple.

If you only want to do this one time, you can enter into grub during the
booting stage, and edit the grub lines yourself.
Nothing is changed, and on the next boot you will get back to your usual kernel.
