ubun2

Ok.  Bare with me a second.  Here's my partition scheme;
(200GB)/dev/sda1  /boot  500M/dev/sda2  LVM    100G

• / (root)
• /home
• /tmp
• /usr
• /var

/dev/sda5  swap 4G
 
So you can see I have 'traditional' /boot and swap partitions.  100GB of the rest of my space is used by LVM as a physical volume.  Within that I've got logical partitions for /, /home, /tmp, /usr, and /var.When I named them originally during the ubuntu install, I called them "Shuttle-root", "Shuttle-home," etc, since my PV is called Shuttle.  Later I noticed that in /dev/mapper they're named /dev/mapper/Shuttle-Shuttle_root, /dev/mapper/Shuttle-Shuttle_home, etc.  I lvrename'd them, and mv'd them.  I forgot to change one entry in /etc/fstab, the root.
So I rebooted and everything mounted fine except for root.  It was still looking for /dev/mapper/Shuttle-Shuttle_root.Now in BusyBox I can mount it and I corrected fstab with sed, but it still doesn't work.  cat /proc/cmdline shows that ROOT=/dev/mapper/Shuttle-Shuttle_root.  I've tried mv'ing back to that file path and changing it back to that in /etc/fstab, to no avail.  I have no idea why it's still failing.