1. Change the partition type of GPT2 and GPT3 to be OS X. GPT2 = OS X, GPT3 = Recovery HD
Here is an example session without the last two commands.
sudo gdisk /dev/disk0
GPT fdisk (gdisk) version 1.0.0
Warning: Devices opened with shared lock will not have their
partition table automatically reloaded!
NOTE: Write test failed with error number 1. It will be impossible to save
changes to this disk's partition table!
Partition table scan:
MBR: hybrid
BSD: not present
APM: not present
GPT: present
Found valid GPT with hybrid MBR; using GPT.
Command (? for help): p
Disk /dev/disk0: 500118192 sectors, 238.5 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 22749ACF-207D-458E-B255-5DF02C39DC2D
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 500118158
Partitions will be aligned on 8-sector boundaries
Total free space is 1325 sectors (662.5 KiB)
Number Start (sector) End (sector) Size Code Name
1 40 409639 200.0 MiB EF00 EFI System Partition
2 409640 250801735 119.4 GiB AF05 OSY-MBP13
3 250801736 252071271 619.9 MiB AB00 Recovery HD
4 252071936 500117503 118.3 GiB 0700 BOOTCAMP
Command (? for help): t
Partition number (1-4): 1
Current type is 'EFI System'
Hex code or GUID (L to show codes, Enter = AF00): L
0700 Microsoft basic data 0c01 Microsoft reserved 2700 Windows RE
3000 ONIE boot 3001 ONIE config 4100 PowerPC PReP boot
4200 Windows LDM data 4201 Windows LDM metadata 4202 Windows Storage Spac
7501 IBM GPFS 7f00 ChromeOS kernel 7f01 ChromeOS root
7f02 ChromeOS reserved 8200 Linux swap 8300 Linux filesystem
8301 Linux reserved 8302 Linux /home 8303 Linux x86 root
8304 Linux x86-64 root (/ 8305 Linux ARM64 root 8306 Linux /srv
8400 Intel Rapid Start 8e00 Linux LVM a500 FreeBSD disklabel
a501 FreeBSD boot a502 FreeBSD swap a503 FreeBSD UFS
a504 FreeBSD ZFS a505 FreeBSD Vinum/RAID a580 Midnight BSD data
a581 Midnight BSD boot a582 Midnight BSD swap a583 Midnight BSD UFS
a584 Midnight BSD ZFS a585 Midnight BSD Vinum a601 OpenBSD data
a800 Apple UFS a901 NetBSD swap a902 NetBSD FFS
a903 NetBSD LFS a904 NetBSD concatenated a905 NetBSD encrypted
a906 NetBSD RAID ab00 Apple boot af00 Apple HFS/HFS+
af01 Apple RAID af02 Apple RAID offline af03 Apple label
af04 AppleTV recovery af05 Apple Core Storage be00 Solaris boot
bf00 Solaris root bf01 Solaris /usr & Mac Z bf02 Solaris swap
bf03 Solaris backup bf04 Solaris /var bf05 Solaris /home
bf06 Solaris alternate se bf07 Solaris Reserved 1 bf08 Solaris Reserved 2
bf09 Solaris Reserved 3 bf0a Solaris Reserved 4 bf0b Solaris Reserved 5
Press the <Enter> key to see more codes:
c001 HP-UX data c002 HP-UX service ea00 Freedesktop $BOOT
eb00 Haiku BFS ed00 Sony system partitio ed01 Lenovo system partit
ef00 EFI System ef01 MBR partition scheme ef02 BIOS boot partition
f800 Ceph OSD f801 Ceph dm-crypt OSD f802 Ceph journal
f803 Ceph dm-crypt journa f804 Ceph disk in creatio f805 Ceph dm-crypt disk i
fb00 VMWare VMFS fb01 VMWare reserved fc00 VMWare kcore crash p
fd00 Linux RAID
Hex code or GUID (L to show codes, Enter = af00):
Changed type of partition to 'Apple HFS/HFS+'
Command (? for help): p
Disk /dev/disk0: 500118192 sectors, 238.5 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 22749ACF-207D-458E-B255-5DF02C39DC2D
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 500118158
Partitions will be aligned on 8-sector boundaries
Total free space is 1325 sectors (662.5 KiB)
Number Start (sector) End (sector) Size Code Name
1 40 409639 200.0 MiB AF00 EFI System Partition
2 409640 250801735 119.4 GiB AF05 OSY-MBP13
3 250801736 252071271 619.9 MiB AB00 Recovery HD
4 252071936 500117503 118.3 GiB 0700 BOOTCAMP
2. Test booting from the Internal disk.
3. You have Free Space after GPT3 which can be addressed after the internal disk starts working.