On Fri, Jul 24, 2009 at 01:23:23PM -0600, Glenn English wrote: > >>>> mdadm --zero-superblock /dev/sdbX > > Well, I thought it was fixed. But on reboot, dmesg said somebody was > still trying to start those 3 RAID arrays I thought I'd destroyed. Perhaps there is some information stored in your initrd? If you take a look at /etc/init.d/mdadm, you'll find some places you can check: RUNDIR=/var/run/mdadm DEBIANCONFIG=/etc/default/mdadm