corabict
Level 1 (8 points)
Windows Software

Q: can't boot to Mac after resizing bootcamp partition using disk management.

Hello guys.

I have a 13-inch MacBook Pro 2012 (9.2) With OSX 10.9 Running. Core I5, 4GB of ram, and a 500 Gb hard disk.

 

I used Bootcamp to install windows 8.1 which was successful, but I wanted another partition to store data so I Cut 100 GB of the Bootcamp partition. and all was well (The recovery partition became visible) until I restarted and I couldn't boot either from Mac or Windows and when you Hold alt on startup only windows show but it always ends up with an error and restart.

 

I Suspected that the problem is within the boot code.I Used a bootable Mac Osx installer to get into disk utility and it shows Macintosh HD and under that
Disk01
Disk02

Disk03

and I can't do anything no verification or partitioning is available. I reset NVRAM and I ran FSCK as suggested by some article. and nothing works.

No disk recovery is available.

Is there any possible way to fix the situation without losing data. ??

MacBook Pro, OS X Mavericks (10.9)

Posted on May 30, 2016 2:47 PM

by Loner T,Solvedanswer
Loner T Loner T
Level 7 (23,828 points)
Safari
A:

Using your values....

 

Step B. Create individual entries . The text in parentheses is for information purposes.

 

corabict-gpt.png

Posted on May 31, 2016 10:16 AM

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corabict

Q: can't boot to Mac after resizing bootcamp partition using disk management.

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  • by BobTheFisherman,

    BobTheFisherman BobTheFisherman May 30, 2016 3:13 PM in response to corabict
    Level 6 (15,324 points)
    May 30, 2016 3:13 PM in response to corabict

    Search this community. Your question has been asked and answered often here. Use the search link located at the upper right of this page.

  • by corabict,

    corabict corabict May 30, 2016 3:59 PM in response to BobTheFisherman
    Level 1 (8 points)
    Windows Software
    May 30, 2016 3:59 PM in response to BobTheFisherman

    I searched the community before posting the question and I find a similar one but The windows side is the one that didn't boot.

    Repairing Boot Camp after creating new partition

     

    After your comment, I tried different keywords until I landed on a solution but it says I have to format all the data and start over. But if you can tell me how to fix that through command line it's really what I need.

    Hello ,I've Installed win7 using bootcamp and after that I used win7 disk management to make another partition . I,ve us…

  • by Loner T,

    Loner T Loner T May 30, 2016 4:14 PM in response to corabict
    Level 7 (23,828 points)
    Safari
    May 30, 2016 4:14 PM in response to corabict

    From Applications -> Utilities -> Terminal, please post the output of

     

    diskutil list

    diskutil cs llist

    sudo gpt -vv -r show /dev/disk0

    sudo fdisk /dev/disk0

     

    The "sudo" commands require your password, when booted normally in OSX, but "sudo" can be dropped when in Internet Recovery.

     

    Any manipulation of the partitions using Windows Disk Management converts the disk to an MBR disk, from which OSX will not boot. Resizing the partition clobbered your Windows, so you can only get into Internet Recovery.

  • by corabict,

    corabict corabict May 30, 2016 5:02 PM in response to Loner T
    Level 1 (8 points)
    Windows Software
    May 30, 2016 5:02 PM in response to Loner T

    here you are, Respectively

    1.png

    2.png

    3.png

     

    4.png

  • by Loner T,Helpful

    Loner T Loner T May 30, 2016 5:52 PM in response to corabict
    Level 7 (23,828 points)
    Safari
    May 30, 2016 5:52 PM in response to corabict

    In the last command, there is no space between "/dev" and "/disk0". Your disk became a Windows LDM which prevents OSX from booting.

     

    Please install OSX on an external disk - How to install OS X on an external drive connected to your Mac - Apple Support - and upgrade it, if necessary, to match the current version of OSX on the internal disk. Download GPT Fdisk - https://sourceforge.net/projects/gptfdisk/ - and install it on the external disk after the OSX versions are matched and boot from it.

     

    We will need to convert the LDM disk back to GPT.

  • by corabict,

    corabict corabict May 30, 2016 6:00 PM in response to Loner T
    Level 1 (8 points)
    Windows Software
    May 30, 2016 6:00 PM in response to Loner T

    Sorry I didn't sleep last night, And I copied things without reading. So I'll get some sleep and tomorrow I'll do what you've just told me and will come back to continue the remained process.Thanks for your patience and for your great help.

  • by Loner T,

    Loner T Loner T May 30, 2016 6:06 PM in response to corabict
    Level 7 (23,828 points)
    Safari
    May 30, 2016 6:06 PM in response to corabict

    Post back when you are ready (and get some sleep, it is good for you ).

  • by corabict,

    corabict corabict May 31, 2016 8:41 AM in response to Loner T
    Level 1 (8 points)
    Windows Software
    May 31, 2016 8:41 AM in response to Loner T

    This is the terminal output that I missed last night.

    code.JPG

    I installed a new Mac OSX 10.9 on the external drive and it matched the one on my laptop. and I installed GPT fdisk as you told me. Now It's time to convert the LDM to GPT. Waiting for your instructions. and by the way, I can't see the internal hard disk from the mac on the external hard drive. I Don't know if I'm supposed to see it or not but I thought I should tell you.

  • by Loner T,Helpful

    Loner T Loner T May 31, 2016 9:39 AM in response to corabict
    Level 7 (23,828 points)
    Safari
    May 31, 2016 9:39 AM in response to corabict

    Can you post the output of the following terminal commands?

     

    diskutil  list

    diskutil cs list

    sudo gdisk -l /dev/disk0

     

    If Gdisk prompts about MBR or GPT selection, please use GPT.

  • by corabict,

    corabict corabict May 31, 2016 9:37 AM in response to Loner T
    Level 1 (8 points)
    Windows Software
    May 31, 2016 9:37 AM in response to Loner T

    Here you are

    [code]

    hmss-MacBook-Pro:~ balsam$ diskutil  list

    /dev/disk0

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:     FDisk_partition_scheme                        *500.1 GB   disk0

       1:                Windows_LDM                         201.1 GB   disk0s1

       2:                Windows_LDM                         191.6 GB   disk0s2

       3:                Windows_LDM                         107.4 GB   disk0s3

    /dev/disk1

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *320.1 GB   disk1

       1:                        EFI EFI                     209.7 MB   disk1s1

       2:                  Apple_HFS Exmac                   319.2 GB   disk1s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk1s3

    hmss-MacBook-Pro:~ balsam$ diskutil cs list

    No CoreStorage logical volume groups found

    hmss-MacBook-Pro:~ balsam$ sudo gdisk -l /dev/disk0

     

     

    WARNING: Improper use of the sudo command could lead to data loss

    or the deletion of important system files. Please double-check your

    typing when using sudo. Type "man sudo" for more information.

     

     

    To proceed, enter your password, or type Ctrl-C to abort.

     

     

    Password:

    GPT fdisk (gdisk) version 1.0.1

     

     

    Caution: invalid backup GPT header, but valid main header; regenerating

    backup header from main header.

     

     

    Caution! After loading partitions, the CRC doesn't check out!

    Warning! Main and backup partition tables differ! Use the 'c' and 'e' options

    on the recovery & transformation menu to examine the two tables.

     

     

    Warning! One or more CRCs don't match. You should repair the disk!

     

     

    Partition table scan:

      MBR: MBR only

      BSD: not present

      APM: not present

      GPT: damaged

     

     

    Found valid MBR and corrupt GPT. Which do you want to use? (Using the

    GPT MAY permit recovery of GPT data.)

    1 - MBR

    2 - GPT

    3 - Create blank GPT

     

     

    Your answer: GPT

    Warning! Main partition table overlaps the first partition by 34 blocks!

    You will need to delete this partition or resize it in another utility.

     

     

    Warning! Secondary partition table overlaps the last partition by

    4613656342287589362 blocks!

    You will need to delete this partition or resize it in another utility.

    Disk /dev/disk0: 976773168 sectors, 465.8 GiB

    Logical sector size: 512 bytes

    Disk identifier (GUID): 00005887-1584-0000-F060-0000B7620000

    Partition table holds up to 128 entries

    First usable sector is 34, last usable sector is 976773134

    Partitions will be aligned on 8-sector boundaries

    Total free space is 1293 sectors (646.5 KiB)

     

     

    Number  Start (sector)    End (sector)  Size       Code  Name

       1              40          409639   200.0 MiB   EF00  EFI system partition

       2          409640       391519207   186.5 GiB   AF00  Customer

       3       391519208       392788743   619.9 MiB   AB00  Recovery HD

       4       392790016       976773119   278.5 GiB   0700  BOOTCAMP

      17  18376656804508598272  4613656343264362496   512 bytes   FFFF  مˆم„¶âµ¢م„±م™¥م م”²â´µم€¶مŒ°م °م،¥وŒ¸مœ±

      19  4179340454199885824  4179340454202923064   1.4 GiB     FFFF  à €

    hmss-MacBook-Pro:~ balsam$

    [/code]

  • by Loner T,

    Loner T Loner T May 31, 2016 10:12 AM in response to corabict
    Level 7 (23,828 points)
    Safari
    May 31, 2016 10:12 AM in response to corabict

    Using your values....

     

    Step A - Creates a blank GPT. Choose 2 for GPT, if prompted.

     

    sudo gdisk /dev/rdisk0

    o

    p

    w

    y

    q

  • by Loner T,Solvedanswer

    Loner T Loner T May 31, 2016 10:16 AM in response to corabict
    Level 7 (23,828 points)
    Safari
    May 31, 2016 10:16 AM in response to corabict

    Using your values....

     

    Step B. Create individual entries . The text in parentheses is for information purposes.

     

    corabict-gpt.png

  • by Loner T,

    Loner T Loner T May 31, 2016 10:17 AM in response to corabict
    Level 7 (23,828 points)
    Safari
    May 31, 2016 10:17 AM in response to corabict

    We need additional steps to get Windows working.

  • by corabict,

    corabict corabict May 31, 2016 12:31 PM in response to Loner T
    Level 1 (8 points)
    Windows Software
    May 31, 2016 12:31 PM in response to Loner T

    you know what, you are the best. really I'm relieved now I've got my mac back Thanks to you. I'll wait for your instruction for the windows part.

    really I can't thank you enough.

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