I wanted to create two partitions on my iMac w/ Lion using a Recovery USB i created using Lion Recovery Disk Assistant but I keep getting Partition failed message saying "couldn't unmount disk"
I have this recently purchased iMac that comes with a Lion but I wanted to have two partitions on the hard disk. I know that the Recovery HD partition is on the same hard disk so I downloaded the Lion Recovery Disk Assistant and created a Recovery disk using a USB. I boot up the system using the USB Recovery disk and run Disk Utility to create 2 Partitions on the hard disk but I get a Failed partition message saying "couldn't unmount disk". What could be the problem here?
admench wrote:
Thanks for your continued help Tony. Do you mean normal boot into the regular operating system setting i.e. no keys held down in bootup? I think I have tried this, with the same result.
Yes, that's what I meant. If that doesn't work, verify that you have a G.U.I.D. partition scheme (you probably do):
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