hendosean
Level 1 (4 points)
Notebooks

Q: Lost partition space after BCA.

I have just installed El Capitan successfully and created a boot camp partition using BCA (Mac - 230GB, BC - 90GB). When I booted up to installation of windows, I got this error "Windows cannot be installed to this hard disk space. Windows must be installed to a partition". I tried to "Format" the hard disk partition but I still received the same error hence I rebooted to Mac to re-partition the boot camp using BCA. I successfully "erased" the partition and went to disk utility expecting to see a 320GB in one partition. To my horror, my 320GB hard disk is now left with 230GB! The Boot camp partition is gone! How do I recover the lost partition space?

 

Macbook Pro 15 inch mid 2010

MacBook Pro, OS X El Capitan (10.11.4)

Posted on Apr 19, 2016 8:53 AM

by Loner T,Apple recommended
Loner T Loner T
Level 7 (23,898 points)
Safari
A:

You have two options.

 

1. Use Time Machine backup/erase/restore, or,

2. Use Terminal commands, lose Recovery HD temporarily, and re-install OSX to get Recovery HD back.

 

Please pick one, and I can provide details.

Posted on Apr 19, 2016 3:26 PM

Close
hendosean

Q: Lost partition space after BCA.

  • All replies
  • Helpful answers

  • by hendosean,

    hendosean hendosean Apr 19, 2016 9:02 AM in response to hendosean
    Level 1 (4 points)
    Notebooks
    Apr 19, 2016 9:02 AM in response to hendosean

    Have been reading a lot of threads on this but I cant seem to troubleshoot. Ran the usual few on terminal and below are the results. Appreciate if I can get some help on this! Have been working on this for more than 3 days.


    diskutil list

    /dev/disk0 (internal, physical):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *320.1 GB   disk0

       1:                        EFI EFI                     209.7 MB   disk0s1

       2:                  Apple_HFS Macintosh HD            230.2 GB   disk0s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3


    diskutil cs list

    No CoreStorage logical volume groups found


    sudo gpt -vv -r show /dev/disk0

    gpt show: /dev/disk0: mediasize=320072933376; sectorsize=512; blocks=625142448

    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 625142447

          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  449635104      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

      450044744    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      451314280  173828135        

      625142415         32         Sec GPT table

      625142447          1         Sec GPT header


    sudo fdisk /dev/disk0

    Disk: /dev/disk0 geometry: 38913/255/63 [625142448 sectors]

    Signature: 0xAA55

             Starting       Ending

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

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

    1: EE 1023 254  63 - 1023 254  63 [         1 -  625142447] <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



  • by Loner T,Apple recommended

    Loner T Loner T Apr 19, 2016 3:26 PM in response to hendosean
    Level 7 (23,898 points)
    Safari
    Apr 19, 2016 3:26 PM in response to hendosean

    You have two options.

     

    1. Use Time Machine backup/erase/restore, or,

    2. Use Terminal commands, lose Recovery HD temporarily, and re-install OSX to get Recovery HD back.

     

    Please pick one, and I can provide details.

  • by hendosean,

    hendosean hendosean Apr 19, 2016 5:05 PM in response to Loner T
    Level 1 (4 points)
    Notebooks
    Apr 19, 2016 5:05 PM in response to Loner T

    Thanks Loner T. Have been reading a lot of your instructions on this website.

     

    I will prefer to use option 1. Time machine. I have a pre capitan back up. Do I need to use a back dated one or a current back up will do?

  • by Loner T,Apple recommended

    Loner T Loner T Apr 19, 2016 5:12 PM in response to hendosean
    Level 7 (23,898 points)
    Safari
    Apr 19, 2016 5:12 PM in response to hendosean

    A current backup will work.

     

    1. Backup OSX and all your files - Use Time Machine to back up or restore your Mac - Apple Support .

    2. Boot into Internet Recovery (Command+Opt+R) - OS X: About OS X Recovery - Apple Support .

    3. Click on Utilties -> Disk Utility and Erase your internal whole disk.

    4. Restore OSX and your files - Use Time Machine to back up or restore your Mac - Apple Support .

     

    This requires a separate external disk which can accommodate TM backup - Backup disks you can use with Time Machine - Apple Support .

  • by hendosean,

    hendosean hendosean Apr 19, 2016 5:21 PM in response to Loner T
    Level 1 (4 points)
    Notebooks
    Apr 19, 2016 5:21 PM in response to Loner T

    I will work on your instructions and keep you posted on how it goes. Thanks!