I have checked almost all the "messed up the fusion drive" posts and don't find any close one to my situation, so I decide to ask a question and hope someone can help me, especially @klanomath 🙂
Here is what happened: I connected my mom's iPad with MacBook Pro 17" Late 2011 running OS X El Capitan 10.11.5 and doing backup then I go to sleep. Next day my mom just pulled her iPad out, later I get up and find the MacBook Pro just with white screen and can't do anything. I turned it off and restart it, the loading bar runs really slow and without finishing loading the laptop shut down automatically. Then I boot it with OS X Install USB and tried to use Disk Utility to fix the problem and it can't even read the disk. After which, I used the Terminal to get this information.
-bash-3.2# diskutil list
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *128.0 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage Fusion 127.7 GB disk0s2
3: Apple_Boot Boot OS X 134.2 MB disk0s3
/dev/disk1 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *750.2 GB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_CoreStorage Fusion 749.3 GB disk1s2
3: Apple_Boot Boot OS X 650.0 MB disk1s3
/dev/disk2 (internal, virtual):
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh HD +869.2 GB disk2
Logical Volume on disk0s2, disk1s2
80F0349D-A7D9-456D-8880-FED244781EE5
Unencrypted Fusion Drive
/dev/disk3 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *8.1 GB disk3
1: EFI EFI 209.7 MB disk3s1
2: Apple_HFS OS X Base System 7.7 GB disk3s2
/dev/disk4 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +5.2 MB disk4
/dev/disk5 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk5
/dev/disk6 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk6
/dev/disk7 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk7
/dev/disk8 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk8
/dev/disk9 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk9
/dev/disk10 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +6.3 MB disk10
/dev/disk11 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +2.1 MB disk11
/dev/disk12 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +1.0 MB disk12
/dev/disk13 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk13
/dev/disk14 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk14
/dev/disk15 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +1.0 MB disk15
/dev/disk16 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +6.3 MB disk16
-bash-3.2# diskutil cs list
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group A5384FEE-5734-426F-AE5D-FF37367CC18C
=========================================================
Name: Fusion
Status: Online
Size: 876988317696 B (877.0 GB)
Free Space: 106496 B (106.5 KB)
|
+-< Physical Volume FEAB1BB3-3316-40D7-9250-0D74E8A7BD41
| ----------------------------------------------------
| Index: 0
| Disk: disk0s2
| Status: Online
| Size: 127691702272 B (127.7 GB)
|
+-< Physical Volume 0481B354-BD46-4686-9811-48726EE6CF68
| ----------------------------------------------------
| Index: 1
| Disk: disk1s2
| Status: Online
| Size: 749296615424 B (749.3 GB)
|
+-> Logical Volume Family FEEC011B-6438-4997-8749-715BDAA66892
----------------------------------------------------------
Encryption Type: None
|
+-> Logical Volume 80F0349D-A7D9-456D-8880-FED244781EE5
---------------------------------------------------
Disk: disk2
Status: Online
Size (Total): 869211684864 B (869.2 GB)
Revertible: No
LV Name: Macintosh HD
Volume Name: Macintosh HD
Content Hint: Apple_HFS
LVG Type: Fusion, Sparse
-bash-3.2#
I don't have a Time Machine backup so if all the data could be recovered I would really appreciate it!
Best Answer
The only solution I was able to discover is to erase and format the drive. You can do that by following these steps:
For more information read How to reinstall OS X on your Mac, then click on Erase a drive and reinstall OS X.