On Tue, 2 May 2006 11:46:39 -0500 Tom wrote: TB> VFS: Cannot open root device "sda1" or unknown-block(0,0) TB> Please append a correct "root=" boot option TB> Kernel panic - not syncing: VFS: Unable to mount root fs on TB> unknown-block(0,0) This error is caused by this line: TB> kernel = "/boot/vmlinuz-2.6.16-1.2096_FC5xen0" You need a xenU kernel, not a xen0 kernel.