gistfile1.sh

sudo gdisk /dev/disk0
GPT fdisk (gdisk) version 0.8.4

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: 1465149168 sectors, 698.6 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 00005865-758C-0000-D936-00005B400000
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 1465149134
Partitions will be aligned on 8-sector boundaries
Total free space is 3445 sectors (1.7 MiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1              40          409639   200.0 MiB   EF00  EFI system partition
   2          409640      1421154879   677.5 GiB   AF00  Customer
   3      1421154880      1422424415   619.9 MiB   AB00  Recovery HD
   4      1422426112      1465147391   20.4 GiB    0700  UBUNTU

Command (? for help): r

Recovery/transformation command (? for help): h

WARNING! Hybrid MBRs are flaky and dangerous! If you decide not to use one,
just hit the Enter key at the below prompt and your MBR partition table will
be untouched.

Type from one to three GPT partition numbers, separated by spaces, to be
added to the hybrid MBR, in sequence: 2 4
Place EFI GPT (0xEE) partition first in MBR (good for GRUB)? (Y/N): y

Creating entry for GPT partition #2 (MBR partition #2)
Enter an MBR hex code (default AF): AF
Set the bootable flag? (Y/N): n

Creating entry for GPT partition #4 (MBR partition #3)
Enter an MBR hex code (default 07): 83
Set the bootable flag? (Y/N): n

Unused partition space(s) found. Use one to protect more partitions? (Y/N): y
Note: Default is 0xEE, but this may confuse Mac OS X.
Enter an MBR hex code (default EE): AF

Recovery/transformation command (? for help): w

Warning! Mismatched GPT and MBR partition! MBR partition 4, of type 0xAF,
has no corresponding GPT partition! You may continue, but this condition
might cause data loss in the future!

Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
PARTITIONS!!

Do you want to proceed? (Y/N):