"You cannot partition the drive you used to start your Mac. You have to
startup the Mac in a different drive to partition a drive."
Hi, I'm running Lion on a late - 2010 15 inch MBP and I already have a Boot Camp partition of Windows 7. I wanted to partition my hard drive again to install Ubuntu (which should be relatively painless). I tried out the live CD to get a taste of what it would be like, and actually tried partitioning from there, which did not work. So I booted back to OSX and went to Disk Utility, selected my drive and tried to resize my Macintosh HD partition to make space for a 4ish GB partition for Ubuntu. I hit Apply, but then I get this error:
<div>Partition failed with the error:<div>File system resize support required, such as HFS+ with Journaling enabled.