Bad Bootcamp Install & Phantom Disk Space

Question

Level 1

9 points

Bad Bootcamp Install & Phantom Disk Space

I have a late 2015 iMac running Sierra version 10.12.5 (16F73). I tried to install Bootcamp but there was an installation error. When I tried to install again, I was unable to because of a different disk error that I should run Disk Utility to fix it. Did that... but it didn't fix the problem.

This person had the exact same problem I had:

https://discussions.apple.com/thread/8000001?answerId=31935339022#31935339022

Here's the output of my "diskutil list":

Marks-iMac:~ mbenzkofer$ diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *3.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage LVG-1 2.6 TB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

/dev/disk1 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *121.3 GB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_CoreStorage LVG-1 121.0 GB disk1s2

3: Apple_Boot Boot OS X 134.2 MB disk1s3

/dev/disk2 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Boba Fett +2.3 TB disk2

Logical Volume on disk0s2, disk1s2

698B348A-60BF-4985-8B07-247F021BC6D7

Unencrypted Fusion Drive

...and "diskutil cs list":

Marks-iMac:~ mbenzkofer$ diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 8932AC33-B9AF-4781-A389-C99FD9AF7350

=========================================================

Name: LVG-1

Status: Online

Size: 2709855764480 B (2.7 TB)

Free Space: 413000622080 B (413.0 GB)

|

+-< Physical Volume 4D4CA02F-8AB7-4D44-A1D2-77C07620DA6C

| ----------------------------------------------------

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 2588866912256 B (2.6 TB)

|

+-< Physical Volume 8E00A892-479D-4E61-80E2-D377DCC5537C

| ----------------------------------------------------

| Index: 1

| Disk: disk1s2

| Status: Online

| Size: 120988852224 B (121.0 GB)

|

+-> Logical Volume Family D1389727-0CEA-4A83-B36D-8BF467D342E1

----------------------------------------------------------

Encryption Type: None

|

+-> Logical Volume 698B348A-60BF-4985-8B07-247F021BC6D7

---------------------------------------------------

Disk: disk2

Status: Online

Size (Total): 2290999885824 B (2.3 TB)

Revertible: No

LV Name: Boba Fett

Volume Name: Boba Fett

Content Hint: Apple_HFS

LVG Type: Fusion, Sparse

I noticed the 413GB of free space, so I used the following command (based on the earlier post with the same issue):

diskutil cs resizeVolume 698B348A-60BF-4985-8B07-247F021BC6D7 0g

But got this error:

The Core Storage Logical Volume UUID is 698B348A-60BF-4985-8B07-247F021BC6D7

Started CoreStorage operation

Error: -69674: The provided Core Storage logical volume has an incorrect size; you should run whole-disk repair

Can anyone tell me if I'm in the right ballpark?

I appreciate any help I can get... trying to avoid trip to the Apple Store. Thx...

Posted on Jul 2, 2017 9:30 AM

Reply

Answer 1

benzz88 Author

Level 1

9 points

Jul 8, 2017 1:49 PM in response to benzz88

Just rebooted holding down the option key, and it seems like I have 2 bootable drives:

Which may explain why I'm only using half of my drive (only 1.56TB out of the full 3.12TB drive):

Do I have 2 bootable disks that are clones of each other?

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Answer 2

Loner T

Level 9

59,536 points

Jul 9, 2017 11:17 AM in response to benzz88

Delete (not erase) disk0s3. Once deleted, re-install Sierra 10.12.5 and check the disk layout.

Installing on an external disk would require a Thunderbolt/USB-c external drive.

Buying a PC is always an option. 😉

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Answer 3

Loner T

Level 9

59,536 points

Jul 2, 2017 9:57 AM in response to benzz88

After resizeVolume, you will need to run from Terminal

diskutil repairDisk disk0

this should correct the error. Reboot and check for Free Space. The 3TB Fusion drive requires a specific partition layout.

Your CS volume is incorrect. The 121Gb SSD should be first in the CS volume at index 0. The 3TB HDD should be at index 1. Do you have a Time Machine backup?

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Answer 4

Loner T

Level 9

59,536 points

Jul 2, 2017 11:37 AM in response to benzz88

The index 0 disk is considered the faster disk (SSD) from which blocks are de-staged to the slower disk (HDD). Reversing the order leads to performance issues. The other challenge is the behavior of BC Assistant. It uses the disk at index 1 (or higher) create a BC partition. Due to the underlying size, you may see partitioning errors similar to what you may have already seen.

It may be prudent to fix the CS LV/LVG before you install Windows. Correcting it later has additional challenges of having to move the Windows partition.

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Answer 5

benzz88 Author

Level 1

9 points

Jul 2, 2017 12:08 PM in response to Loner T

I'm guessing fixing the CS LV/LVG issue would mean booting into Internet Recovery Mode. Would I just be repairing the drive that way or reformatting and restoring from a TM backup?

What is the best path forward to getting my machine back on track?

Reply

Answer 6

benzz88 Author

Level 1

9 points

Jul 8, 2017 12:18 PM in response to Loner T

I followed the example in the post and thought I'd resolved my problems -- the SSD seemed to have been indexed at 0 and the HDD indexed at 1. That's what I was looking to do. Then I brought back my content through Migration Assistant from a Time Machine Backup.

Here's the new output of "diskutil cs list":

Marks-iMac:~ mbenzkofer$ diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group E34D0131-7035-45D6-86BC-CBDCF2017425

=========================================================

Name: OSX-Macintosh-LVG

Status: Online

Size: 3120587857920 B (3.1 TB)

Free Space: 114688 B (114.7 KB)

|

+-< Physical Volume 5A88BFB2-C7D5-4098-A341-F1875A769080

| ----------------------------------------------------

| Index: 0

| Disk: disk1s2

| Status: Online

| Size: 120988852224 B (121.0 GB)

|

+-< Physical Volume 1A03428E-CFCF-4999-9D2E-62EA409EB00A

| ----------------------------------------------------

| Index: 1

| Disk: disk0s2

| Status: Online

| Size: 2999599005696 B (3.0 TB)

|

+-> Logical Volume Family 0C1C0652-BDFA-4B7C-83CC-DAD95729268A

----------------------------------------------------------

Encryption Type: None

|

+-> Logical Volume EA34B25C-B624-42FD-9179-A8718B5AEDD2

---------------------------------------------------

Disk: disk2

Status: Online

Size (Total): 3114732486656 B (3.1 TB)

Revertible: No

LV Name: Boba Fett

Volume Name: Boba Fett

Content Hint: Apple_HFS

LVG Type: Fusion, Sparse

And here's the new "diskutil list"... here it shows the HDD back at 0 and the SSD back at 1:

Marks-iMac:~ mbenzkofer$ diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *3.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage OSX-Macintosh-LVG 3.0 TB disk0s2

3: Apple_Boot Boot OS X 134.2 MB disk0s3

4: Apple_Boot 650.0 MB disk0s4

/dev/disk1 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *121.3 GB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_CoreStorage OSX-Macintosh-LVG 121.0 GB disk1s2

3: Apple_Boot Boot OS X 134.2 MB disk1s3

/dev/disk2 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Boba Fett +3.1 TB disk2

Logical Volume on disk1s2, disk0s2

EA34B25C-B624-42FD-9179-A8718B5AEDD2

Unencrypted Fusion Drive

And when I go to run Bootcamp Assistant, I get this error:

The startup disk cannot be partitioned or restored to a single partition.

The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Assistant for installing Windows.

Can you tell where I went wrong?

Reply

Answer 7

Loner T

Level 9

59,536 points

Jul 8, 2017 12:39 PM in response to benzz88

Can you post the output of

diskutil cs list

macOS can renumber disks after reboot, however, the Fusion drive sequence should stay as the SSD first and HDD second, because macOS does not re-build Fusion drive once it has been setup.

There is a manual partitioning method for a 3Tb Fusion drive using cs resizeStack which can help us partition it correctly.

Reply

Answer 8

benzz88 Author

Level 1

9 points

Jul 8, 2017 12:47 PM in response to Loner T

Sure thing, here's the output:

Marks-iMac:~ mbenzkofer$ diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group E34D0131-7035-45D6-86BC-CBDCF2017425

=========================================================

Name: OSX-Macintosh-LVG

Status: Online

Size: 3120587857920 B (3.1 TB)

Free Space: 114688 B (114.7 KB)

|

+-< Physical Volume 5A88BFB2-C7D5-4098-A341-F1875A769080

| ----------------------------------------------------

| Index: 0

| Disk: disk1s2

| Status: Online

| Size: 120988852224 B (121.0 GB)

|

+-< Physical Volume 1A03428E-CFCF-4999-9D2E-62EA409EB00A

| ----------------------------------------------------

| Index: 1

| Disk: disk0s2

| Status: Online

| Size: 2999599005696 B (3.0 TB)

|

+-> Logical Volume Family 0C1C0652-BDFA-4B7C-83CC-DAD95729268A

----------------------------------------------------------

Encryption Type: None

|

+-> Logical Volume EA34B25C-B624-42FD-9179-A8718B5AEDD2

---------------------------------------------------

Disk: disk2

Status: Online

Size (Total): 3114732486656 B (3.1 TB)

Revertible: No

LV Name: Boba Fett

Volume Name: Boba Fett

Content Hint: Apple_HFS

LVG Type: Fusion, Sparse

Reply

Answer 9

benzz88 Author

Level 1

9 points

Jul 8, 2017 1:10 PM in response to Loner T

I created a partition in Disk Utility, but it's been hanging on "Resizing Core Storage Physical Volume structures" for the past 5 minutes.

It has not completed creating the partition. No progress bar... just hanging there.

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Answer 10

benzz88 Author

Level 1

9 points

Jul 8, 2017 1:35 PM in response to benzz88

I had to get out of Disk Utility because it was hanging the whole machine. Here's the updated diskutil outputs:

"diskutil list":

Marks-iMac:~ mbenzkofer$ 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 OSX-Macintosh-LVG 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 OSX-Macintosh-LVG 3.0 TB disk1s2

3: Apple_Boot Boot OS X 134.2 MB disk1s3

4: Apple_Boot 650.0 MB disk1s4

/dev/disk2 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Boba Fett +1.6 TB disk2

Logical Volume on disk0s2, disk1s2

EA34B25C-B624-42FD-9179-A8718B5AEDD2

Unencrypted Fusion Drive

"diskutil cs list":

Marks-iMac:~ mbenzkofer$ diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group E34D0131-7035-45D6-86BC-CBDCF2017425

=========================================================

Name: OSX-Macintosh-LVG

Status: Online

Size: 3120587857920 B (3.1 TB)

Free Space: 1557299314688 B (1.6 TB)

|

+-< Physical Volume 5A88BFB2-C7D5-4098-A341-F1875A769080

| ----------------------------------------------------

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 120988852224 B (121.0 GB)

|

+-< Physical Volume 1A03428E-CFCF-4999-9D2E-62EA409EB00A

| ----------------------------------------------------

| Index: 1

| Disk: disk1s2

| Status: Online

| Size: 2999599005696 B (3.0 TB)

|

+-> Logical Volume Family 0C1C0652-BDFA-4B7C-83CC-DAD95729268A

----------------------------------------------------------

Encryption Type: None

|

+-> Logical Volume EA34B25C-B624-42FD-9179-A8718B5AEDD2

---------------------------------------------------

Disk: disk2

Status: Online

Size (Total): 1557433286656 B (1.6 TB)

Revertible: No

LV Name: Boba Fett

Volume Name: Boba Fett

Content Hint: Apple_HFS

LVG Type: Fusion, Sparse

Looks like there's an extra 1.6TB chunk that popped up.

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Answer 11

Loner T

Level 9

59,536 points

Jul 8, 2017 2:53 PM in response to benzz88

You have 1.6TB Free space as shown in the Free Space line. It shows the second one in Bootmanager because it has an EFI partition, but no macOS. Can you absorb the Free Space back into the Bobba Fett?

Reply

Answer 12

Loner T

Level 9

59,536 points

Jul 8, 2017 8:09 PM in response to benzz88

From Terminal, run

diskutil cs resizeVolume EA34B25C-B624-42FD-9179-A8718B5AEDD2 0g

and post the output. The '0g' is a grow-to-fill available space operation.

You may see an error about running disk repair, then run

diskutil repairDisk disk0

and reboot and post the output of

diskutil cs list

.

Reply

Answer 13

benzz88 Author

Level 1

9 points

Jul 8, 2017 4:38 PM in response to Loner T

Nice. Looks like the free space is gone.

Marks-iMac:~ mbenzkofer$ diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group E34D0131-7035-45D6-86BC-CBDCF2017425

=========================================================

Name: OSX-Macintosh-LVG

Status: Online

Size: 3120587857920 B (3.1 TB)

Free Space: 114688 B (114.7 KB)

|

+-< Physical Volume 5A88BFB2-C7D5-4098-A341-F1875A769080

| ----------------------------------------------------

| Index: 0

| Disk: disk1s2

| Status: Online

| Size: 120988852224 B (121.0 GB)

|

+-< Physical Volume 1A03428E-CFCF-4999-9D2E-62EA409EB00A

| ----------------------------------------------------

| Index: 1

| Disk: disk0s2

| Status: Online

| Size: 2999599005696 B (3.0 TB)

|

+-> Logical Volume Family 0C1C0652-BDFA-4B7C-83CC-DAD95729268A

----------------------------------------------------------

Encryption Type: None

|

+-> Logical Volume EA34B25C-B624-42FD-9179-A8718B5AEDD2

---------------------------------------------------

Disk: disk2

Status: Online

Size (Total): 3114732486656 B (3.1 TB)

Revertible: No

LV Name: Boba Fett

Volume Name: Boba Fett

Content Hint: Apple_HFS

LVG Type: Fusion, Sparse

Here's the "diskutil list" output:

Marks-iMac:~ mbenzkofer$ diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *3.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage OSX-Macintosh-LVG 3.0 TB disk0s2

3: Apple_Boot Boot OS X 134.2 MB disk0s3

4: Apple_Boot 650.0 MB disk0s4

/dev/disk1 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *121.3 GB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_CoreStorage OSX-Macintosh-LVG 121.0 GB disk1s2

3: Apple_Boot Boot OS X 134.2 MB disk1s3

/dev/disk2 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Boba Fett +3.1 TB disk2

Logical Volume on disk1s2, disk0s2

EA34B25C-B624-42FD-9179-A8718B5AEDD2

Unencrypted Fusion Drive

Here's where the HDD is 0 and the SSD is 1. Also, this output doesn't look like it's correct. Do I need to swap those index numbers before giving Bootcamp another try?

Reply

Answer 14

benzz88 Author

Level 1

9 points

Jul 8, 2017 5:15 PM in response to Loner T

Gotcha. That's cool then.

When I run Boot Camp Assistant, I get the same message as before:

The startup disk cannot be partitioned or restored to a single partition.

The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Assistant for installing Windows.

I also still get dual "Boba Fett 2" and "Boba Fett" drives when I boot into option mode. Is there still a partition in the machine that is throwing off Boot Camp?

Reply

Answer 15

benzz88 Author

Level 1

9 points

Jul 8, 2017 5:32 PM in response to benzz88

I think I found the problem. In Apple's Support docs for Boot Camp they say:

Microsoft Reserved and Windows Recovery partitions can be identified as unmounted partitions with the name "disk0s3" or "disk0s5" in Disk Utility. To remove these partitions, use OS X Disk Utility.

One of those names is used for Apple Recovery in my HDD:

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *3.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage OSX-Macintosh-LVG 3.0 TB disk0s2

3: Apple_Boot Boot OS X 134.2 MB disk0s3

4: Apple_Boot 650.0 MB disk0s4

Which doesn't even seem like the right name. Isn't it supposed to be called "Mac OS X Recovery" or something like it? I don't think the recovery files are even in there, because when I booted into recovery, I went straight to the spinning globe... it wasn't a local recovery partition that was used.

I have the same partition on the SSD as well:

/dev/disk1 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *121.3 GB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_CoreStorage OSX-Macintosh-LVG 121.0 GB disk1s2

3: Apple_Boot Boot OS X 134.2 MB disk1s3

Do I need to delete the partition for "disk0s3" in order to install Boot Camp? And if I do that, will that do anything to my OS? Doesn't seem like I use those recovery tools anyway.

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