I am trying to create a new partition so I can install Windows through Boot Camp. I boot into recovery mode using my Recovery Assistant USB and no matter what I do, when I try to resize my drive and create a new partition, I get this error. What am I doing wrong?
3 Answers
Have you tried repartitioning with Boot Camp (just go through the Boot Camp process normally)? You shouldn't have to repartition manually in the first place.
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When I go into Bootcamp I get this error: "The startup disk cannot be partitioned or restored to a single partition. The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Assistant for installing Windows."– ZacharyJul 10, 2012 at 1:42
Use Boot commands for mac os x
You should install OS X on an external hard drive and wipe your internal hard drive. Hopefully, if there's nothing on the internal drive, the OS won't bother mounting it.
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1I've had cases where I get this error even when I run the system from an external drive. Recent versions of OS X seem to mount the internal drive at boot whether it needs it or not.– bmike ♦Oct 10, 2012 at 15:04
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I would not listen to advice to wipe my disk that has the word "hopefully" in it.– myhdOct 13, 2012 at 14:40
diskutil list disk0(prints the partition table as OSX sees it)sudo gpt -r show disk0(prints the actual GUID partition table)sudo fdisk /dev/disk0(prints the MBR partition table, used by Boot Camp) - when Disk Utility can't partition, it's often because the GPT and MBR don't agree for whatever reason, and you have to manually fix it.