Hi, I''m trying to get a Fedora 8 para-virtual guest to run on a FC6 host. I had problems with the install because of the bugs in the 0.200 release of virtinst. I fixed this by doing a source install of virtinst-0.300. The F8 install completed succesfully, but when the guest boots I get this msg: <snip initial boot msgs> md: Autodetecting RAID arrays. md: autorun ... md: ... autorun DONE. VFS: Cannot open root device "vg_skeggles/lv_root" or unknown-block(0,0) Please append a correct "root=" boot option Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) Has anyone got any ideas about how to fix this? I am currently using kernel-xen-2.6.20-1.2952.fc6 and xen 3.0.3-9.fc6 (I''ve upgraded to kernel-xen-2.6.20-1.3002.fc6 and xen-3.0.3-13.fc6 but not rebooted yet). My xen config file (created automatically by virt-install) is as follows: name = "skeggles" uuid = "a8912edd-ea7c-f324-f1bb-fdbc0c1a4b65" maxmem = 512 memory = 512 vcpus = 1 bootloader = "/usr/bin/pygrub" on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" sdl = 0 vnc = 0 vncunused = 0 disk = [ "phy:/dev/vg_guests/lv_skeggles,xvda,w" ] vif = [ "mac=00:16:3e:4c:82:c7,bridge=xenbr0" ] Thanks, R.