MacOS – 3 TB Fusion Drive missing space after unsuccessful Windows installation via Bootcamp

bootcampfusion-drivemacospartition

I have been trying to install Windows via Bootcamp on my iMac (Retina 5K, 27-inch, 2017, 3 TB Fusion Drive; Mac OS 10.12.6) and messed up. Here are the steps taken so far:

Ran Bootcamp and partitioned successfully
Rebooted to install Windows 10 and hit an error
Stopped Windows installation and rebooted in Mac OS
Tried to restore to single partition using Bootcamp and hit an error
Tried to restore to single partition in Disk Utility, messed up and
Fusion Drive now show as 1.62 TB only
Ran First Aid in Internet Recovery Mode and had nothing to repair
Erased and reinstalled Mac OS in Internet Recovery Mode

However, half my Fusion Drive is still missing. How do I restore to a single 3TB partition? I have all my data backed up on Time Machine. Appreciate it if someone is able to help please, thanks!

diskutil cs list

CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group F3C88EBD-849D-460C-87A0-5951EB3BCA0F
    =========================================================
    Name:         Macintosh HD
    Status:       Online
    Size:         1616854839296 B (1.6 TB)
    Free Space:   53248 B (53.2 KB)
    |
    +-< Physical Volume 19F3173E-21AA-498D-BF4D-CF0A00207DCC
    |   ----------------------------------------------------
    |   Index:    0
    |   Disk:     disk0s2
    |   Status:   Online
    |   Size:     120883990528 B (120.9 GB)
    |
    +-< Physical Volume 051E7004-96A8-4052-B376-88F56AE15CBA
    |   ----------------------------------------------------
    |   Index:    1
    |   Disk:     disk1s2
    |   Status:   Online
    |   Size:     1495970848768 B (1.5 TB)
    |
    +-> Logical Volume Family 8C0ED5DA-37D5-40D6-AE1E-9291F2738B5B
        ----------------------------------------------------------
        Encryption Type:         None
        |
        +-> Logical Volume ED2463F3-F297-4C53-88C7-6701DBF8E63E
            ---------------------------------------------------
            Disk:                  disk2
            Status:                Online
            Size (Total):          1611000053760 B (1.6 TB)
            Revertible:            No
            LV Name:               Macintosh HD
            Volume Name:           Macintosh HD
            Content Hint:          Apple_HFS
            LVG Type:              Fusion, Sparse

diskutil list

/dev/disk0 (internal):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                         121.3 GB   disk0
   1:                        EFI EFI                     314.6 MB   disk0s1
   2:          Apple_CoreStorage Macintosh HD            120.9 GB   disk0s2
   3:                 Apple_Boot Boot OS X               134.2 MB   disk0s3

/dev/disk1 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *3.0 TB     disk1
   1:                        EFI EFI                     209.7 MB   disk1s1
   2:          Apple_CoreStorage Macintosh HD            1.5 TB     disk1s2
   3:                 Apple_Boot Recovery HD             1.5 TB     disk1s3

/dev/disk2 (internal, virtual):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                  Apple_HFS Macintosh HD           +1.6 TB     disk2
                                 Logical Volume on disk0s2, disk1s2
                                 ED2463F3-F297-4C53-88C7-6701DBF8E63E
                                 Unencrypted Fusion Drive

diskutil info disk1s3

 Device Identifier:        disk1s3
   Device Node:              /dev/disk1s3
   Whole:                    No
   Part of Whole:            disk1

   Volume Name:              Recovery HD
   Mounted:                  Yes
   Mount Point:              /Volumes/Recovery HD

   Partition Type:           Apple_Boot
   File System Personality:  HFS+
   Type (Bundle):            hfs
   Name (User Visible):      Mac OS Extended
   Owners:                   Enabled

   OS Can Be Installed:      No
   Media Type:               Generic
   Protocol:                 SATA
   SMART Status:             Verified
   Volume UUID:              6BD5580D-FF8B-3C7A-A9D4-4328AE128DF3
   Disk / Partition UUID:    D70E2D06-129A-492F-8F2F-41952CB59CB3

   Disk Size:                1.5 TB (1504278159360 Bytes) (exactly 2938043280 512-Byte-Units)
   Device Block Size:        512 Bytes

   Volume Total Space:       1.5 TB (1504278159360 Bytes) (exactly 2938043280 512-Byte-Units)
   Volume Used Space:        733.2 MB (733249536 Bytes) (exactly 1432128 512-Byte-Units) (0.0%)
   Volume Available Space:   1.5 TB (1503544909824 Bytes) (exactly 2936611152 512-Byte-Units) (100.0%)
   Allocation Block Size:    4096 Bytes

   Read-Only Media:          No
   Read-Only Volume:         Yes

   Device Location:          Internal
   Removable Media:          Fixed

   Solid State:              No

Best Answer

Your 3.1 TB Fusion Drive isn't really missing space. Stopping the Windows install and trying to revert to a previous state inflated the size of the Recovery HD at the expense of your main macOS volume "Macintosh HD". The normal size of the Recovery HD partition is 650.0 MB with ~526 MB occupied by a base macOS system and ~124 MB of free space.

Now you can either remove the oversized recovery partition (alluding to this answer: How do I regain unaccessible free space after a failed Boot Camp install on a non-Fusion drive?), expand the Logical Volume disk2 and reinstall macOS to recreate the recovery partition or you can resize your current recovery partition to a smaller but non-standard size and expand the Logical Volume disk2.

The first option takes at least 90 minutes, the second probably less than two minutes.

The second option works like this:

Boot to your main macOS volume
Get the partition list with diskutil list and here the device identifier of the recovery partition
Resize the oversized 1.5 TB recovery partition:
```
diskutil resizeVolume diskXs3 1024m #with X either 0 or 1
```
If you get a "too small" error choose a slightly larger size like 1088m until you are successful.
Get the UUID of the Logical Volume with diskutil cs list
Resize the CoreStorage stack with:
```
diskutil cs resizeStack lvUUID size
```
In your case that's:
```
diskutil cs resizeStack ED2463F3-F297-4C53-88C7-6701DBF8E63E 3105817m
```
If you get a "too large" error choose a slightly smaller size like 3105812m until you are successful. The larger your Recovery HD has to be in the first resize step, the smaller the size has to be here.

Related Solutions

MacOS – Can’t modify partitions

Thanks @Tetsujin. The listing looked a little screwy so I was a little hesitant to go mucking around with the command-line diskutil. But I ended up doing a

diskutil corestorage list

and then

diskutil corestorage delete [UUID of 50GB Logical Volume Group]

GUI Disk Utility correctly saw the 50 GB of empty space as part of the other Logical Volume Group and I was able to delete it and merge it back in fine.

I think I messed up the Fusion Drive on the 1TB iMac (with BootCamp)

Theoretically everything is fine with your Fusion Drive. Fusion Drives look like this. Disk0 is your SSD with 121 GB and disk1 is your HDD with ~1 TB (~1.121 TB summed up).

The larger parts of your SSD (disk0s2) and your HDD (disk1s2) are pooled to a CoreStorage LVG (Fusion Drive: disk3) with a size of 967.8 GB. The rest is reserved for EFIs, a Recovery HD (alltogether ~1.3 GB) and your old Windows partition - now probably free space (~152 GB).

The logical volume 'Macintosh HD' (967.8 GB) spans disk0s2 and disk1s2. This is the first 'Macintosh HD' in picture 1. The volume 'Macintosh HD' - it's the one visible on the desktop - should ideally also have about 967.8 GB. This is the second 'Macintosh HD' in picture 1.
In fact it has only 852.67 GB (see picture 3).

In the second picture the logical volume 'Macintosh HD' is the first listed in black, the volume 'Macintosh HD' is the second listed in black, the other two 'Macintosh HD's listed in grey are the parts of your SSD and HDD dedicated to the logical volume 'Macintosh HD'.

In my opinion something went wrong after deleting various partitions with the Bootcamp Assistant/Disk Utility or in Windows.

Preparation:

Detach any external drive (especially your external Time Machine backup drive)
Restart to Internet Recovery Mode by pressing alt cmd R at startup.
The prerequisites are the latest firmware update installed, either ethernet or WLAN (WPA/WPA2) and a router with DHCP activated.
On a 50 Mbps-line it takes about 4 min (presenting a small animated globe) to boot into a recovery netboot image which usually is loaded from an apple/akamai server.

I recommend ethernet because it's more reliable. If you are restricted to WIFI and the boot process fails, just restart your Mac until you succeed booting.

Alternatively you may start from a bootable installer thumb drive (preferably Mavericks or Yosemite) or a thumb drive containing a full system (preferably Mavericks or Yosemite).

Now you may either repair CoreStorage or rebuild your Fusion Drive:

'Repair CoreStorage' (not recommended):

First i would try to check the volume 'Macintosh HD' with Disk Utility. If the volume is corrupted consider a reinstall of Mac OS X.
If the volume is ok quit Disk Utility
Open Terminal and enter diskutil unmountDisk /dev/LVIdentifier and both diskutil unmountDisk /dev/DiskContainingApple_CoreStorageIdentifier
In your case: first diskutil unmountDisk /dev/disk3 then diskutil unmountDisk /dev/disk0 and diskutil unmountDisk /dev/disk1
remove the EFI NO NAME partition with gpt remove -i IndexNumberOfEFINoName DiskIdentifier:
gpt remove -i 4 disk1
Remount the CoreStorage disks and then the Logical Volume:
In your case: first diskutil mountDisk /dev/disk0 and diskutil mountDisk /dev/disk1 and then diskutil mount /dev/disk3.

enter gpt -r -vvv show /dev/diskIdentfierOfApple_CoreStorage to get infos of your HDD CoreStorage disk.
In your case: gpt -r -vvv show /dev/disk1
It should look like this:

-bash-3.2# gpt -r -vvv show /dev/disk1
gpt show: /dev/disk1: mediasize=1000204886016; sectorsize=512;         blocks=1953525168
gpt show: /dev/disk1: PMBR at sector 0
gpt show: /dev/disk1: Pri GPT at sector 1
gpt show: /dev/disk1: GPT partition: type=C12A7328-F81F-11D2-BA4B-00A0C93EC93B, start=40, size=409600
gpt show: /dev/disk1: GPT partition: type=53746F72-6167-11AA-AA11-00306543ECAC, start=409640, size=1671210848
gpt show: /dev/disk1: GPT partition: type=426F6F74-0000-11AA-AA11-00306543ECAC, start=1671620488, size=1269760
gpt show: /dev/disk1: Sec GPT at sector 1953525167                               
     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    1671210848      2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
1671620488       1269760      3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
1672890248     280634887
1953525135            32        Sec GPT table
1953525167             1        Sec GPT header

The free space on your HDD has 280634887 blocks. Please calculate the biggest block number dividable through 8. That's 280634880 blocks (á 512 bytes) which equals 143685058560 B or ~143.7 GB. Add the size of your HDD CoreStorage Physical Volume (852666400768 B) The result is 143685058560 B + 852666400768 B = 996351459328 B
Resize your HDD CoreStorage physical volume with diskutil cs resizeDisk HDDPVUUID newsize
In your case: diskutil cs resizeDisk 93892BE8-2B7F-4ABD-A4C3-984495DCD98D 996351459328b
Calculate the maximal size of your CoreStorage Logical Volume in diskutil cs list: (size disk0s2) + (size disk1s2) In your case that's 120988852224 B + 996351459328 B = 1117340311552 B. That should be the size of your refreshed Logical Volume Group.
Resize your Logical Volume with diskutil cs resizeVolume LVUUID LVGSize-128 MB In your case that's diskutil cs resizeVolume D237FFDC-7DA4-41D7-AC13-4CC7E5E8C0A0 1117212311552b. If you get an error (There is not enough free space...) choose a smaller size like 1117148311552b.
Quit Terminal and open Disk Utility.
Check your expanded CoreStorage Volume for errors.
Quit Disk Utility, choose your CS volume as startup disk and restart your Mac

'Rebuild Fusion Drive' (recommended if you have a Time Machine backup)

Booted to Internet Recovery Mode open Utilities → Terminal in the menubar and enter:
diskutil cs list to get the CoreStorage listing.
Copy the Logical Volume UUID, it's the fifth listed.
Now delete the Logical Volume with diskutil cs deleteVolume LVUUID.
In your case: diskutil cs deleteVolume D237FFDC-7DA4-41D7-AC13-4CC7E5E8C0A0.
Copy the Logical Volume Group UUID, it's the first listed in the listing of diskutil cs list.
Then delete the Logical Volume Group with diskutil cs delete LVGUUID.
In your case: diskutil cs delete 1EFE58BC-3613-44C4-86EE-D816F3B66E3E
Enter exit and quit 'Terminal'
Open 'Disk Utility'. Enter 'Ignore' if you are asked to fix the drives.
Choose your SSD and partition it: 1 Partition Mac OS X Extended (Journaled), hit the Options button and choose GUID Partiton table and hit OK and Apply.
Please check that the size is ~121 GB

Example:
Choose your HDD and partition it: 1 Partition Mac OS X Extended (Journaled), hit the Options button and choose GUID Partiton table and hit OK and Apply.
Please check that the size is ~1 TB

Example:
Quit Disk Utility and open Terminal
Enter diskutil list

Example (your disk identifiers and sizes are different of course: Your volume SSD probably has the Identifier disk0s2 and the size 121 GB and your volume HDD probably has the Identifier disk1s2 and the size 1.0 TB):
Enter diskutil cs create "Name" IdentifierSSD IdentifierHDD
In your case probably diskutil cs create "Macintosh HD" disk0s2 disk1s2.

Copy the resulting LVGUUID

Example:
Enter diskutil cs CreateVolume LVGUUID jhfs+ "Macintosh HD" 100%.

Example:
Enter diskutil cs list
Check the size of your Logical Volume. It should have the size ~1.121 TB

Example:
Quit Terminal
Open 'Disk Utility' and check your newly created volume for errors
Quit 'Disk Utility'
Attach your external Time Machine backup drive or check this answer if you use NAS or another network share.
Open 'Restore from Time Machine Backup'
Choose the appropriate Time Machine backup and restore your system
Reboot to your restored system.
Unmount and detach your Time Machine backup drive
Open 'Terminal' and enter 'diskutil list'
Check if your 'Recovery HD' is listed.
If your 'Recovery HD' is missing, usually reinstalling your current system with the latest available system installer (e.g. 'Install OS X Mavericks (10.9.5)' if Mavericks is currently installed) will recreate it without loosing any data. AFAIK Recovery Partition Creator 3.8 will NOT create a Recovery HD on CoreStorage volumes.
After reinstalling the system with the latest available system installer open App Store and install the latest security fixes.

Best Answer

Related Solutions

MacOS – Can’t modify partitions

I think I messed up the Fusion Drive on the 1TB iMac (with BootCamp)

Related Question