can't resize lvm-p2 boot partition, even from live cd

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http://askubuntu.com – I've got a MacBook Pro (late 2011). I just bought a 1TB HDD to replace the original 500GB. My plan was to partition the 1TB in half and let one side be Ubuntu and the other OS X (until I can reasonable get rid of OS X. I need it for work). Right now I have Ubuntu 12.10 installed on the 1TB and it's fine, but it's taking up all of the drive. It automatically set the partition that way. I made sure to check the LVM box. Easy to resize, they said. Right. Here's what I've got right now, as seen from booting up on a live CD or USB: The partition is locked. It's not mounted though. Yet for the l (HowTos)