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partition disappear after bootcamp install failure, partition disappear after bootcamp install failure

I was trying to install win 7 on my macbook air,but the my macbook has hang suddenly ,and I need to reboot it.after reboot ,a ~20gb space has gone and it is the partition I originally prepare for the win 7 install.I can't delete the partition.

Anyone can help me ?Thankyou!

Here is the output of the diskutil cs list:

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 089AECFE-2531-4671-8146-FA7BE91B72B0

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

Name: Macintosh HD

Status: Online

Size: 100473065472 B (100.5 GB)

Free Space: 81920 B (81.9 KB)

|

+-< Physical Volume 01592311-888C-4C6B-9A39-EF41409043D0

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 100473065472 B (100.5 GB)

|

+-> Logical Volume Family CB5619ED-1844-4A48-AEE7-36E044C71A47

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

Encryption Status: Unlocked

Encryption Type: None

Conversion Status: NoConversion

Conversion Direction: -none-

Has Encrypted Extents: No

Fully Secure: No

Passphrase Required: No

|

+-> Logical Volume 92AEAFF8-18A7-41BB-B9CA-5A93D0681445

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

Disk: disk1

Status: Online

Size (Total): 100120657920 B (100.1 GB)

Conversion Progress: -none-

Revertible: No

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

MacBook Air, OS X Yosemite (10.10.4)

Posted on Jul 6, 2015 6:41 PM

Reply
17 replies

Jul 6, 2015 6:56 PM in response to brianfromkk

Last login: Tue Jul 7 09:27:27 on ttys000

BriandeMacBook-Air:~ brian$ /Users/brian/Downloads/testdisk-7.0/testdisk ; exit;

TestDisk 7.0, Data Recovery Utility, April 2015

Christophe GRENIER <grenier@cgsecurity.org>

http://www.cgsecurity.org


No disk found.

TestDisk will try to restart itself using the sudo command to get

root (superuser) privileges.


sudo may ask your user password, it doesn't ask for the root password.

Usually there is no echo or '*' displayed when you type your password.


Password:

TestDisk 7.0, Data Recovery Utility, April 2015

Christophe GRENIER <grenier@cgsecurity.org>

http://www.cgsecurity.org








TestDisk 7.0, Data Recovery Utility, April 2015

Christophe GRENIER <grenier@cgsecurity.org>

http://www.cgsecurity.org



TestDisk is free software, and

comes with ABSOLUTELY NO WARRANTY.


Select a media (use Arrow keys, then press Enter):

>Disk /dev/disk0 - 121 GB / 113 GiB (RO)

Disk /dev/rdisk0 - 121 GB / 113 GiB (RO)

Disk /dev/rdisk1 - 100 GB / 93 GiB








>[Proceed ] [ Quit ]


Note: Disk capacity must be correctly detected for a successful recovery.

If a disk listed above has incorrect size, check HD jumper settings, BIOS

detection, and install the latest OS patches and disk drivers.

Jul 6, 2015 7:14 PM in response to Loner T

Thankyou for replying ,I am waiting for you Loner T!

here is the output:

Last login: Tue Jul 7 09:54:21 on ttys000

BriandeMacBook-Air:~ brian$ diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *121.3 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage 100.5 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD *100.1 GB disk1

Logical Volume on disk0s2

92AEAFF8-18A7-41BB-B9CA-5A93D0681445

Unencrypted

Jul 6, 2015 7:13 PM in response to Loner T

Last login: Tue Jul 7 10:10:43 on ttys000

BriandeMacBook-Air:~ brian$ sudo gpt -vv -r show /dev/disk0

Password:

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 196236456 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

196646096 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

197915632 39062511

236978143 32 Sec GPT table

236978175 1 Sec GPT header

BriandeMacBook-Air:~ brian$ sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 14751/255/63 [236978176 sectors]

Signature: 0xAA55

Starting Ending

#: id cyl hd sec - cyl hd sec [ start - size]

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

1: EE 1023 254 63 - 1023 254 63 [ 1 - 236978175] <Unknown ID>

2: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

3: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

BriandeMacBook-Air:~ brian$

Jul 6, 2015 7:20 PM in response to brianfromkk

This is your 'lost' diskspace.

197915632 39062511


The simplest and safest solution is


1. Back up OSX using Time Machine - Mac Basics: Time Machine backs up your Mac - Apple Support.

2. Boot into Internet Recovery - OS X: About OS X Recovery - Apple Support.

3. Erase your internal drive and restore from the TM backup in Step 1 - OS X Yosemite: Recover your entire system.


Please be aware that TM does not backup Bootcamp partitions.

Jul 6, 2015 8:02 PM in response to brianfromkk

You erased the Macintosh HD logical volume, not the Macintosh HD Logical volume group. You need to pick the disk not the volume.


In your diskutil cs list there are two entries for Macintosh HD.


+-- Logical Volume Group 089AECFE-2531-4671-8146-FA7BE91B72B0

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

Name: Macintosh HD


and


+-> Logical Volume 92AEAFF8-18A7-41BB-B9CA-5A93D0681445

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

Disk: disk1

Status: Online

Size (Total): 100120657920 B (100.1 GB)

Conversion Progress: -none-

Revertible: No

LV Name: Macintosh HD

Volume Name: Macintosh HD


Pick the first one, not the second one.

Jul 6, 2015 8:10 PM in response to Loner T

"The Core Storage Logical Volume Group UUID is 089AECFE-2531-4671-8146-FA7BE91B72B0

Started CoreStorage operation

Ejecting Logical Volumes

The volume "Macintosh HD" on disk1 couldn't be unmounted

Error: -69888: Couldn't unmount disk"

This is the output of distill cs delete...

I am not very familiar on what should I do ,would you mind explain a little bit more on the steps?Thankyou so much!

Jul 6, 2015 8:26 PM in response to brianfromkk

You cannot delete this while booted normally. Boot into Internet Recovery (not Local Recovery - you must see a spinning globe).


Start Utilities -> Terminal.


diskutil cs deleteVolume 92AEAFF8-18A7-41BB-B9CA-5A93D0681445

diskutil cs delete 089AECFE-2531-4671-8146-FA7BE91B72B0

diskutil eraseDisk JHFS+ SSD disk0


Re-install OSX.

partition disappear after bootcamp install failure, partition disappear after bootcamp install failure

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