http://mirror.yandex.ru/archlinux/iso/archboot/2008.12/archlinux-2008.12-archboot.iso

Конечно, а разве есть еще варианты?

http://mirror.yandex.ru/archlinux/iso/archboot/Readme.txt
<Ъ>
This directory contains installation images based on archboot scripts.
Those files are no official Arch Linux releases.
Use them on your own risk.
If you find a bug, please mail the archboot developer directly.
</Ъ>