Thanks for the quick reply and the good news! I tried the following command according to the same input in the thread you linked and came back with the following error. I tried making the BC partition 20/40/125/400g sizes with the same error returned but would like it OS X and BC to have an even split of the SSD/HDD respectively.
OSX-Recovery:~ brianx87$ diskutil list
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *250.1 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage 249.7 GB disk0s2
3: Apple_Boot Boot OS X 134.2 MB disk0s3
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.1 GB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_CoreStorage 499.2 GB disk1s2
3: Apple_Boot Recovery HD 650.1 MB disk1s3
/dev/disk2
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Minibase *742.4 GB disk2
Logical Volume on disk0s2, disk1s2
06E3F0E9-E108-40B2-B6C3-2E64F102179B
Unencrypted Fusion Drive
/dev/disk3
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *750.2 GB disk3
1: EFI EFI 209.7 MB disk3s1
2: Apple_HFS Backup Library 674.8 GB disk3s2
3: Apple_HFS TimeMachine Minibase 49.9 GB disk3s3
4: Apple_HFS OSX Yosemite 24.3 GB disk3s4
5: Apple_Boot Recovery HD 650.0 MB disk3s5
OSX-Recovery:~ brianx87$ diskutil cs list
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group 6696174C-9545-404C-9023-14E5D1C6D825
=========================================================
Name: [Fusion]
Status: Online
Size: 748963364864 B (749.0 GB)
Free Space: 122880 B (122.9 KB)
|
+-< Physical Volume 3D176755-54F6-400D-9C29-61D29025197D
| ----------------------------------------------------
| Index: 0
| Disk: disk0s2
| Status: Online
| Size: 249715376128 B (249.7 GB)
|
+-< Physical Volume 58D1E10A-08B1-4792-A04C-734C9DD2AC38
| ----------------------------------------------------
| Index: 1
| Disk: disk1s2
| Status: Online
| Size: 499247988736 B (499.2 GB)
|
+-> Logical Volume Family 4736D236-D014-4696-A180-B8093CC21778
----------------------------------------------------------
Encryption Status: Unlocked
Encryption Type: None
Conversion Status: NoConversion
Conversion Direction: -none-
Has Encrypted Extents: No
Fully Secure: No
Passphrase Required: No
|
+-> Logical Volume 06E3F0E9-E108-40B2-B6C3-2E64F102179B
---------------------------------------------------
Disk: disk2
Status: Online
Size (Total): 742403211264 B (742.4 GB)
Conversion Progress: -none-
Revertible: No
LV Name: Minibase
Volume Name: Minibase
Content Hint: Apple_HFS
OSX-Recovery:~ brianx87$ sudo gpt -vv -r show /dev/disk0
Password:
gpt show: /dev/disk0: mediasize=250059350016; sectorsize=512; blocks=488397168
gpt show: /dev/disk0: PMBR at sector 0
gpt show: /dev/disk0: Pri GPT at sector 1
gpt show: /dev/disk0: Sec GPT at sector 488397167
start size index contents
0 1 PMBR
1 1 Pri GPT header
2 32 Pri GPT table
34 6
40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
409640 487725344 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
488134984 262144 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
488397128 7
488397135 32 Sec GPT table
488397167 1 Sec GPT header
OSX-Recovery:~ brianx87$ sudo gpt -vv -r show /dev/disk1
gpt show: /dev/disk1: mediasize=500107862016; sectorsize=512; blocks=976773168
gpt show: /dev/disk1: PMBR at sector 0
gpt show: /dev/disk1: Pri GPT at sector 1
gpt show: /dev/disk1: Sec GPT at sector 976773167
start size index contents
0 1 PMBR
1 1 Pri GPT header
2 32 Pri GPT table
34 6
40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
409640 975093728 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
975503368 1269760 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
976773128 7
976773135 32 Sec GPT table
976773167 1 Sec GPT header
OSX-Recovery:~ brianx87$ sudo fdisk /dev/disk0
Disk: /dev/disk0 geometry: 30401/255/63 [488397168 sectors]
Signature: 0xAA55
Starting Ending
#: id cyl hd sec - cyl hd sec [ start - size]
------------------------------------------------------------------------
1: EE 1023 254 63 - 1023 254 63 [ 1 - 488397167] <Unknown ID>
2: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
3: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
OSX-Recovery:~ brianx87$ sudo fdisk /dev/disk1
Disk: /dev/disk1 geometry: 60801/255/63 [976773168 sectors]
Signature: 0xAA55
Starting Ending
#: id cyl hd sec - cyl hd sec [ start - size]
------------------------------------------------------------------------
1: EE 1023 254 63 - 1023 254 63 [ 1 - 976773167] <Unknown ID>
2: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
3: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused