Bootcamp partition trouble

Question

Bootcamp partition trouble

Used bootcamp to install windows 10 on my mac.

Mac is running OS X El Capitan.

Right at the end of the partitioning the computer froze, through I would leave it for a little while, may be doing what it's meant to.

Left it for about half an hour, nothing changed so i decided to reboot. Once I rebooted, my hard drive is missing the 32 gb I was giving to the partition and not a single program can find the new partition. Bootcamp and disk utility don't recognise it's there. Disk utility shows my mac storage as being 120gb but there only being the mac partition and it being only 88gb. I assume the computer freezing during the partition program is what caused this, what I need is a solution. I can't use bootcamp to delete the partition because bootcamp doesn't even recognise a partition exists. When I use first aid from disk utility it says there's probably a problem with the partition map. How can I solve this, I've been to every forum and post I can find and short of taking into apple I don't know what else I can do.

MacBook Air, OS X El Capitan (10.11.5)

Posted on Jul 23, 2016 3:30 AM

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Answer 1

Loner T

Level 9

59,536 points

Jul 23, 2016 6:30 AM in response to bootcampheadache

From OS X Terminal, please post the output of the following commands...

diskutil list

diskutil cs list

If BCA fails during partitioning, it can leave some disk space in an unknown state.

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Answer 2

Jul 23, 2016 6:34 AM in response to Loner T

diskutil list:
CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group E06D173B-5A3F-4DFF-81CC-2E3099BB0212

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

Name: Macintosh HD

Status: Online

Size: 120472952832 B (120.5 GB)

Free Space: 32137502720 B (32.1 GB)

|

+-< Physical Volume D86D81D7-9EDC-4F13-8AB2-E9A52B400BB6

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 120472952832 B (120.5 GB)

|

+-> Logical Volume Family A122ECE1-BB72-412E-8C03-D0447B093583

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

Encryption Type: AES-XTS

Encryption Status: Unlocked

Conversion Status: Complete

High Level Queries: Fully Secure

| Passphrase Required

| Accepts New Users

| Has Visible Users

| Has Volume Key

|

+-> Logical Volume 43806D1C-FC4D-4C7D-88A0-CBDDDE56E1DB

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

Disk: disk1

Status: Online

Size (Total): 87999905792 B (88.0 GB)

Revertible: Yes (unlock and decryption required)

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

Josefs-Air:~ JosefWilkinson$ diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *121.3 GB disk0

1: Microsoft Basic Data 209.7 MB disk0s1

2: Apple_CoreStorage Macintosh HD 120.5 GB disk0s2

3: Apple_Boot Recovery HD 650.1 MB disk0s3

/dev/disk1 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD +88.0 GB disk1

Logical Volume on disk0s2

43806D1C-FC4D-4C7D-88A0-CBDDDE56E1DB

Unlocked Encrypted

diskutil cs list:

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group E06D173B-5A3F-4DFF-81CC-2E3099BB0212

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

Name: Macintosh HD

Status: Online

Size: 120472952832 B (120.5 GB)

Free Space: 32137502720 B (32.1 GB)

|

+-< Physical Volume D86D81D7-9EDC-4F13-8AB2-E9A52B400BB6

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 120472952832 B (120.5 GB)

|

+-> Logical Volume Family A122ECE1-BB72-412E-8C03-D0447B093583

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

Encryption Type: AES-XTS

Encryption Status: Unlocked

Conversion Status: Complete

High Level Queries: Fully Secure

| Passphrase Required

| Accepts New Users

| Has Visible Users

| Has Volume Key

|

+-> Logical Volume 43806D1C-FC4D-4C7D-88A0-CBDDDE56E1DB

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

Disk: disk1

Status: Online

Size (Total): 87999905792 B (88.0 GB)

Revertible: Yes (unlock and decryption required)

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

Thanks for the help.

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Answer 3

Loner T

Level 9

59,536 points

Jul 23, 2016 6:59 AM in response to bootcampheadache

Free Space: 32137502720 B (32.1 GB)

This is where your 'lost' disk space is hiding.

Can you use Boot Camp Fail. Genius Bar struggling as a reference and use the diskutil cs resizeVolume and diskutil repairDisk commands?

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Answer 4

Jul 23, 2016 7:08 AM in response to Loner T

These are the responses I get:

diskutil cs resizeVolume 32137502720 B:

32137502720 does not appear to be a valid Core Storage Logical Volume UUID or disk

diskutil repairDisk 32137502720 B:

Usage: diskutil repairDisk MountPoint|DiskIdentifier|DeviceNode

Repair the required layout and components of the partition map of a whole disk.

Ownership of the affected disk is required.

I don't know if I've done this right.

Thanks.

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Answer 5

Loner T

Level 9

59,536 points

Jul 23, 2016 7:18 AM in response to bootcampheadache

Please boot into Internet Recovery and ensure you have a backup. The UUID came from your specific output.

diskutil cs resizeVolume 43806D1C-FC4D-4C7D-88A0-CBDDDE56E1DB 0g

diskutil repairDisk disk0

Please post the output of both commands. In Internet Recovery, you will need to use Utilities -> Terminal and run these commands. Use Copy (Command+C) to copy the entire output, exit Terminal, start Safari, and Paste (Command+V) the output as a reply in this discussion.

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Answer 6

Jul 23, 2016 8:13 AM in response to Loner T

diskutil cs resizeVolume 43806D1C-FC4D-4C7D-88A0-CBDDDE56E1DB 0g

The Core Storage Logical Volume UUID is 43806D1C-FC4D-4C7D-88A0-CBDDDE56E1DB

Started CoreStorage operation

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

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Answer 7

Jul 23, 2016 8:15 AM in response to Loner T

diskutil repairDisk disk0

Repairing the partition map might erase disk0s1, proceed? (y/N) y

Started partition map repair on disk0

Checking prerequisites

Checking the partition list

Adjusting partition map to fit whole disk as required

Checking for an EFI system partition

Problems were encountered during repair of the partition map

Error: -69767: This disk doesn't contain an EFI system partition; if you want to start up your computer with this disk or include it in a RAID set, back up your data and partition this disk

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Answer 8

Loner T

Level 9

59,536 points

Jul 23, 2016 8:18 AM in response to bootcampheadache

Can you post the output of diskutil list? Is disk0 still your internal disk?

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Answer 9

Jul 23, 2016 8:22 AM in response to Loner T

diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *121.3 GB disk0

1: Microsoft Basic Data 209.7 MB disk0s1

2: Apple_CoreStorage 120.5 GB disk0s2

3: Apple_Boot Recovery HD 650.1 MB disk0s3

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: Apple_partition_scheme *1.3 GB disk1

1: Apple_partition_map 30.7 KB disk1s1

2: Apple_HFS OS X Base System 1.3 GB disk1s2

/dev/disk2

#: TYPE NAME SIZE IDENTIFIER

0: untitled *5.2 MB disk2

/dev/disk3

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk3

/dev/disk4

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk4

/dev/disk5

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk5

/dev/disk6

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk6

/dev/disk7

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk7

/dev/disk8

#: TYPE NAME SIZE IDENTIFIER

0: untitled *6.3 MB disk8

/dev/disk9

#: TYPE NAME SIZE IDENTIFIER

0: untitled *2.1 MB disk9

/dev/disk10

#: TYPE NAME SIZE IDENTIFIER

0: untitled *1.0 MB disk10

/dev/disk11

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk11

/dev/disk12

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk12

/dev/disk13

#: TYPE NAME SIZE IDENTIFIER

0: untitled *1.0 MB disk13

/dev/disk14

#: TYPE NAME SIZE IDENTIFIER

0: untitled *6.3 MB disk14

/dev/disk15

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD *88.0 GB disk15

Logical Volume on disk0s2

43806D1C-FC4D-4C7D-88A0-CBDDDE56E1DB

Unlocked Encrypted

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Answer 10

Loner T

Level 9

59,536 points

Jul 23, 2016 8:35 AM in response to bootcampheadache

Your Mac's EFI partition was modified by the Windows installer and it's Partition type GUID was modified, so OS X complains.

The best tool to fix this is GPT Fdisk - https://sourceforge.net/projects/gptfdisk/ .

We can do it in two different ways.

1. Install OSX on external volume - How to install OS X on an external drive connected to your Mac - Apple Support, install GPT Fdisk on this external disk. Update the GPT, or,

2. Boot normally, install GPT Fdisk and update the live disk, which may require additional reboot.

Method 1 is a lot more work, but safer, then Method 2. My recommendation is to use Method 2.

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Answer 11

Jul 23, 2016 8:36 AM in response to Loner T

Will give method 2 a shot, thanks for the help

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Answer 12

Jul 23, 2016 8:43 AM in response to Loner T

What do you mean by update the live disk?

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Answer 13

Loner T

Level 9

59,536 points

Jul 23, 2016 8:45 AM in response to bootcampheadache

You will be updating the partition type GUID of the disk which you are booted from using Method 2.

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Answer 14

Jul 23, 2016 9:02 AM in response to Loner T

What exactly do I do after I've installed GPT Fdisk?

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Answer 15

Loner T

Level 9

59,536 points

Jul 23, 2016 9:15 AM in response to bootcampheadache

In GPT Fdisk, there is a 't' command, which allows you to change the partition type. It needs to be EF00.

sudo gdisk /dev/disk0

p

t

1

EF00

p

w

y

Reboot and post the output of

diskutil list

sudo gpt -vv -r show /dev/disk0

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