Warning: The kernel may continue to use old or deleted partitions. OK writing new GUID partition table (GPT) to /dev/disk0. Recovery/transformation command (? for help): wįinal checks complete. Number Boot Start Sector End Sector Status Code Recovery/transformation command (? for help): oĭisk size is 977105060 sectors (465.9 GiB) Place EFI GPT (0圎E) partition first in MBR (good for GRUB)? (Y/N): YĬreating entry for GPT partition #2 (MBR partition #2)Ĭreating entry for GPT partition #5 (MBR partition #3)Ĭreating entry for GPT partition #4 (MBR partition #4) Type from one to three GPT partition numbers, separated by spaces, to beĪdded to the hybrid MBR, in sequence: 2 5 4 Just hit the Enter key at the below prompt and your MBR partition table will WARNING! Hybrid MBRs are flaky and dangerous! If you decide not to use one, Recovery/transformation command (? for help): h Warning: Devices opened with shared lock will not have theirįound valid GPT with hybrid MBR using GPT. So a little more Googling and researcing hybrid MBRs 2, 3 led to me to gptfdisk 4. Thus when I rebooted the machine, Windows wasn’t shown as a boot option in the boot camp menu. I tried $ sudo gptsync /dev/disk0 2-af 5-af 4-07 which created the partitions I actually wanted (with the Windows partition in the same position) except the 4th partition wasn’t bootable. On the four partitions in the MBR the rescue partition was there, instead of the “data” partition I’d created.
#GPT PARTITION FOR MAC BOOTCAMP MAC OS X#
So I booted back into Mac OS X to resolve. Clearly the revised (“hybrid”) MBR I’d created had missed the volume out. I figured I could copy the files into the Windows partition if I needed to make changes.Ī surprise came when I noticed that when I booted into Windows I could see the primary Mac OS X partition, but not the additional data partition.
#GPT PARTITION FOR MAC BOOTCAMP DRIVERS#
The boot camp drivers in Windows allow read-only access to HFS+ volumes so I could still access the data as need be.
However, I later reformatted it as HFS+ as the vast majority of the time it’s used from Mac OS X. I’d originally set my “data” partition to use the exFAT file system with the intention that I could write to it easily from the different operating systems. (There does seem to be a bit of confusion on the topic 1.) Googling for a while on the best approach to create multiple partitions with boot camp, I ended up following the instructions on “ MBA13/2012: OSX + Win7 + Shared exFAT” as they made the most sense to me. (For example, when needing to run the Windows 8 Phone simulator.) So in my most recent upgrade, I got a 500GB SSD in my new MacBook Air 13" to make sure I had room for multiple boot partitions. While I spend most of my time these days in Mac OS X, there are times when working with Windows in a VM just isn’t good enough.
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