On Thursday February 21, jr-list-linuxraid@quo.to wrote: > > Doh! /dev/md0 is actually my root partition... So I guess there's no way to > change the number of disks with the md device running? Argh... Well actually..... - Edit /etc/fstab and /etc/lilo.conf (or whatever) to make it think that /dev/hda2 is your root partitions, - reboot, - run the mdctl commands, excluding the --add - put /etc/fstab and /etc/lilo.conf back - reboot - run the mdctl --add You cannot do it without a reboot or two, but it should work fine with two reboots. NeilBrown - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html