macOS El Captain missing disk space on Fusion drive on iMac, missing contents for GPT partition

Question

I was formatting my Fusion drive of 3 TB and unfortunately it seems 1 TB is missing. I tried to search the answer on this forum and found some relevant answers here but my situation is bit different from rest of them.

I followed the question Can not delete Free Space on iMac 5K: Partition doesn't appear in CS list, but in my case there is no disk type "EFI" with name "NO NAME" at index 4 in this question of /dev/disk1.
I also followed the question How do I regain unaccessible free space after a failed Boot Camp install on a non-Fusion drive?, but in my case the partition with no "contents" in output of sudo gpt -r -vv show /dev/disk1 is not in last rather in middle of partitions.

Hence I am asking this question here which is a bit different from others. Following are the output from commands:

$ diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *121.3 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:          Apple_CoreStorage Internal Drive          121.0 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 Internal Drive          1.9 TB     disk1s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk1s3
/dev/disk2 (internal, virtual):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                  Apple_HFS Macintosh HD           +2.0 TB     disk2
                                 Logical Volume on disk0s2, disk1s2
                                 602E835E-52A9-430D-A71D-F9DEA9021350
                                 Unencrypted Fusion Drive

$ diskutil cs list
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group CDBA30A3-4E01-4C10-BA17-18BAC59CAC7E
    =========================================================
    Name:         Internal Drive
    Status:       Online
    Size:         2014532599808 B (2.0 TB)
    Free Space:   122880 B (122.9 KB)
    |
    +-< Physical Volume BE89A454-7A2E-4224-AC03-A19FC75517E8
    |   ----------------------------------------------------
    |   Index:    0
    |   Disk:     disk0s2
    |   Status:   Online
    |   Size:     120988852224 B (121.0 GB)
    |
    +-< Physical Volume 8F1E9932-8A17-4BD8-A976-8297B54B6156
    |   ----------------------------------------------------
    |   Index:    1
    |   Disk:     disk1s2
    |   Status:   Online
    |   Size:     1893543747584 B (1.9 TB)
    |
    +-> Logical Volume Family A633F451-9D90-4AEF-985B-6F9E67D968D0
        ----------------------------------------------------------
        Encryption Type:         None
        |
        +-> Logical Volume 602E835E-52A9-430D-A71D-F9DEA9021350
            ---------------------------------------------------
            Disk:                  disk2
            Status:                Online
            Size (Total):          1999999991808 B (2.0 TB)
            Revertible:            No
            LV Name:               Macintosh HD
            Volume Name:           Macintosh HD
            Content Hint:          Apple_HFS
            LVG Type:              Fusion, Sparse

$ sudo gpt -r -vv show /dev/disk0
gpt show: /dev/disk0: mediasize=121332826112; sectorsize=512; blocks=236978176
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 236978175
      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  236306352      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
  236715992     262144      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
  236978136          7
  236978143         32         Sec GPT table
  236978175          1         Sec GPT header

$ sudo gpt -r -vv show /dev/disk1
gpt show: /dev/disk1: mediasize=3000592982016; sectorsize=512; blocks=5860533168
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 5860533167
       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  3698327632      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
  3698737272  2160526320
  5859263592     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
  5860533128           7
  5860533135          32         Sec GPT table
  5860533167           1         Sec GPT header

$ sudo gpt -r -vv show /dev/disk2
gpt show: unable to open device '/dev/disk2': Resource busy

As one can see size of disk1 is 3.0TB at index 0 of disk1 in the output of diskutil list. There is no index at /dev/disk1 which has missing 1.0 TB (3.0 TB - 1.9 TB - 209 MB - 650 MB) as mentioned in the first question (Can not delete Free Space on iMac 5K: Partition doesn't appear in CS list).

After investigating the output of gpt -r -vv show /dev/disk1 I can see the there is a missing entry in middle where content field is missing for it.

How to recover this lost space of around 1TB?

Progress 1

Hi @klanomath following is the status after removing disk1s3 and resizing disk1s2 and adding the gpt entry leaves me here

$ sudo gpt -r show /dev/disk1
       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  3698327632      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
  3698737272  2161795863      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
  5860533135          32         Sec GPT table
  5860533167           1         Sec GPT header

$diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *121.3 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:          Apple_CoreStorage Internal Drive          121.0 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 Internal Drive          1.9 TB     disk1s2
   3:                 Apple_Boot Partition3              1.1 TB     disk1s3
/dev/disk2 (internal, virtual):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                  Apple_HFS Macintosh HD           +2.0 TB     disk2
                                 Logical Volume on disk0s2, disk1s2
                                 602E835E-52A9-430D-A71D-F9DEA9021350
                                 Unencrypted Fusion Drive

As you can see

3:                 Apple_Boot Partition3              1.1 TB     disk1s3

new partition at disk1s3 is taking 1.1 TB. How can I recover this back and add it to my Macintosh HD?

Progress 2

Hi @klanomath as your comments I performed commands you mentioned. I could not run second command successfully.

$diskutil eraseVolume "Free Space" %noformat% /dev/disk1s3
Started erase on disk1s3 Partition3
Unmounting disk
Finished erase on disk1

$ diskutil cs resizeStack 602E835E-52A9-430D-A71D-F9DEA9021350 0g
The Core Storage Logical Volume UUID is 602E835E-52A9-430D-A71D-F9DEA9021350
Started CoreStorage operation
Error: -69722: You can't perform this resize unless it has a booter (target partition is probably too small)

How did you get the 1.106 TB gap? Did you try to install/remove Boot Camp? — klanomath, Apr 1 '18 at 13:14
@klanomath Actually I had two versions of El Captain installed on both the partitions. When I tried to remove one of them I got this gap. — john, Apr 1 '18 at 13:52
Backup Macintosh HD first! Then I would try diskutil cs resizeStack 602E835E-52A9-430D-A71D-F9DEA9021350 0g first. If this fails remove disk1s3 and try it again. After resizing disk0s2 restore the Recovery HD with Recovery Partition 4.0.4. — klanomath, Apr 1 '18 at 14:06
@klanomath I have couple of questions here : 1. By disk0s2 do you mean disk1s2? 2. by resizing disk do you mean $diskutil cs resizeDisk 602E835E-52A9-430D-A71D-F9DEA9021350 newsize? I am sorry but what should be my newsize here? Thanks for your help in advance. — john, Apr 1 '18 at 15:17
The disk0s2 was erroneous: I meant disk1s2. The LVG and the LV (and indirectly PV(disk1s2)) gets resized with this undocumented command. The UUID of the LV has to be entered. ... 0g is a magic size which expands (disk0s2&)disk1s2 to the max. — klanomath, Apr 1 '18 at 15:22

asked	1 year ago
viewed	87 times

Stack Exchange Network

current community

your communities

more stack exchange communities

macOS El Captain missing disk space on Fusion drive on iMac, missing contents for GPT partition

0

You must log in to answer this question.

Browse other questions tagged macos hard-drive disk-utility core-storage fusion-drive .

Linked

Hot Network Questions

macOS El Captain missing disk space on Fusion drive on iMac, missing contents for GPT partition

0

You must log in to answer this question.

Browse other questions tagged macos hard-drive disk-utility core-storage fusion-drive .

Linked

Related

Hot Network Questions