Did that and restarted. Ran repair on diskutility and am now getting another error: "Invalis BS_jmpBoot in boot block: cccccc"
Here is the output from what I did:
sudo gdisk /dev/rdisk0
Password:
GPT fdisk (gdisk) version 1.0.3
Warning: Devices opened with shared lock will not have their
partition table automatically reloaded!
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/rdisk0: 976773168 sectors, 465.8 GiB
Sector size (logical): 512 bytes
Disk identifier (GUID): 2AC1F790-DB9C-4612-BC99-2F206F7E5B43
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 976773134
Partitions will be aligned on 8-sector boundaries
Total free space is 21 sectors (10.5 KiB)
Number
Start (sector) End (sector)
Size Code
Name
1 40 409639
200.0 MiB
EF00
EFI System Partition
2 409640 840253383
400.5 GiB
AF00
3 840253384 841522919
619.9 MiB
AB00
4 841522920 976773119
64.5 GiB 0700
Microsoft basic data
Command (? for help): r
Recovery/transformation command (? for help): o
Disk size is 976773168 sectors (465.8 GiB)
MBR disk identifier: 0xA855315C
MBR partitions:
Number
Boot
Start Sector
End Sector
Status Code
1 1 409639
primary 0xEE
2 409640 840253383
primary 0xAF
3 840253384 841522919
primary 0xAB
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 3 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):
Set the bootable flag? (Y/N): n
Creating entry for GPT partition #3 (MBR partition #3)
Enter an MBR hex code (default AB):
Set the bootable flag? (Y/N): n
Creating entry for GPT partition #4 (MBR partition #4)
Enter an MBR hex code (default 07):
Set the bootable flag? (Y/N): y
Recovery/transformation command (? for help): o
Disk size is 976773168 sectors (465.8 GiB)
MBR disk identifier: 0xA855315C
MBR partitions:
Number
Boot
Start Sector
End Sector
Status Code
1 1 409639
primary 0xEE
2 409640 840253383
primary 0xAF
3 840253384 841522919
primary 0xAB
4 * 841522920 976773119
primary 0x07
Recovery/transformation command (? for help): w
Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
PARTITIONS!!
Do you want to proceed? (Y/N): y
OK; writing new GUID partition table (GPT) to /dev/rdisk0.
Warning: Devices opened with shared lock will not have their
partition table automatically reloaded!
Warning: The kernel may continue to use old or deleted partitions.
You should reboot or remove the drive.
The operation has completed successfully.