How do I load and run an initial ram disk (initrd)?
To specify an initrd file for domain 0 add an extra “module” line to your GRUB config, after your kernel-module line (e.g., module /boot/initrd-2.6-xen0.img). To use an initrd file for other domains, set the “ramdisk” variable in your domain configuration file (e.g., ramdisk = path/to/initrd-2.6-xenU.img).