>> I did a locate on "libzso.1", but it couldn't find it. > it is libz.so.1, used by modprobe to uncompress gzipped modules Quite right - a typo on my part :) > anyway, could you try with lvm tools and the modified mkinitrd > found on http://www.comedia.it/bluca/lvm/ OK, I upgraded to the latest mkinitrd and re-ran lvmcreate_initrd, but it complained that it couldn't find lvm-mod.o (or mod-lvm.o - I don't remember which way round). So I downloaded the latest version of lvm (1.0.1) from the link you gave me and upgraded. This time lvmcreate_initrd worked, but when I reboot I get another error: **** RAMDISK: Complressed image found at block 0 Uncompressing...............<3>invalid compressed format (err=2)done. **** And then it all fails because Root fs is not mounted... Any ideas? Cheers, Ben