cooliopatra
Level 1 (5 points)
Windows Software

Q: repairing bootcamp after partition

hi, my bootcamp won't start.

I can see the bootcamp files on finder and also see the bootcamp system on startup disk in system preference of my OS but when ever I choose to restart my computer using window it just says no bootable device found and goes all black.

I recently updated my os to el capitan and deleted unused partition that was taking up space.

I don't know much about computers so if you could help me I will be so grateful!!!! 

 

/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_HFS Macintosh HD            75.9 GB    disk0s2

   3:                 Apple_Boot Recovery HD             5.1 GB     disk0s3

   4:       Microsoft Basic Data BOOTCAMP                40.0 GB    disk0s4

/dev/disk1 (external, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:     FDisk_partition_scheme                        *500.1 GB   disk1

   1:                 DOS_FAT_32 HANNA                   500.1 GB   disk1s1

 

diskutil cs list

No CoreStorage logical volume groups found

sudo gpt -vv -r show /dev/disk0

gpt show: /dev/disk0: mediasize=121332826112; sectorsize=512; blocks=236978176

gpt show: /dev/disk0: Suspicious MBR 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         MBR

          1          1         Pri GPT header

          2         32         Pri GPT table

         34          6        

         40     409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

     409640  148163312      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

  148572952   10020072      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

  158593024     262144        

  158855168   78120960      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

  236976128       2015        

  236978143         32         Sec GPT table

  236978175          1         Sec GPT header

MacBook Air (13-inch Mid 2012), OS X El Capitan (10.11.4)

Posted on Apr 21, 2016 8:15 PM

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

You have two separate issues.

 

1. Your Recovery HD is the incorrect size. It is usually 620 MB, but it is now 5.1Gb.

2. Your MBR entry #4 is incorrect. Let us try to fix this first before we solve the other issue.

 

A. We need to disable SIP (System Integrity Protection).

 

1. Boot into Local Recovery (Command+R).

2. Start Utilities -> Terminal.

3. Type csrutil disable in Terminal and press Enter/Return.

4. Type csrutil status.

5. Boot normally, and type csrutil status to confirm that all individual entries are still disabled.

 

B. Correct the MBR. Please ignore the i386 MBR errors, but not any others.

 

sudo fdisk -e /dev/disk0

p

setpid 4

07

flag 4

p

w

y

 

Reboot and Test. If It works repeat step A with csrutil enable to re-enable SIP.

Posted on Apr 21, 2016 10:02 PM

Close
cooliopatra

Q: repairing bootcamp after partition

  • All replies
  • Helpful answers

Page 1 Next

  • by Loner T,

    Loner T Loner T Apr 21, 2016 8:35 PM in response to cooliopatra
    Level 7 (23,828 points)
    Safari
    Apr 21, 2016 8:35 PM in response to cooliopatra

    Open Applications -> Utilities -> Terminal. Triple-click on each individual line below, and Copy (Command+C) and Paste (Command+V) in the Terminal window. Copy the output and paste it in as a reply. You will be prompted for your password which will not be echoed back to you.

     

    sudo fdisk /dev/disk0

    sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null | hexdump -C

  • by cooliopatra,

    cooliopatra cooliopatra Apr 21, 2016 8:52 PM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 21, 2016 8:52 PM in response to Loner T

    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 -     409639] <Unknown ID>

    2: AF 1023 254  63 - 1023 254  63 [    409640 -  148163312] HFS+       

    3: AB 1023 254  63 - 1023 254  63 [ 148572952 -   10020072] Darwin Boot

    4: 0C 1023 254  63 - 1023 254  63 [ 158855168 -   78120960] Win95 FAT32L

    sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null | hexdump -C

    00000000  eb 52 90 4e 54 46 53 20  20 20 20 00 02 08 00 00  |.R.NTFS    .....|

    00000010  00 00 00 00 00 f8 00 00  3f 00 ff 00 00 f0 77 09  |........?.....w.|

    00000020  00 00 00 00 80 00 80 00  ff 07 a8 04 00 00 00 00  |................|

    00000030  00 00 0c 00 00 00 00 00  02 00 00 00 00 00 00 00  |................|

    00000040  f6 00 00 00 01 00 00 00  bb 73 a8 6c 8b a8 6c ca  |.........s.l..l.|

    00000050  00 00 00 00 fa 33 c0 8e  d0 bc 00 7c fb 68 c0 07  |.....3.....|.h..|

    00000060  1f 1e 68 66 00 cb 88 16  0e 00 66 81 3e 03 00 4e  |..hf......f.>..N|

    00000070  54 46 53 75 15 b4 41 bb  aa 55 cd 13 72 0c 81 fb  |TFSu..A..U..r...|

    00000080  55 aa 75 06 f7 c1 01 00  75 03 e9 dd 00 1e 83 ec  |U.u.....u.......|

    00000090  18 68 1a 00 b4 48 8a 16  0e 00 8b f4 16 1f cd 13  |.h...H..........|

    000000a0  9f 83 c4 18 9e 58 1f 72  e1 3b 06 0b 00 75 db a3  |.....X.r.;...u..|

    000000b0  0f 00 c1 2e 0f 00 04 1e  5a 33 db b9 00 20 2b c8  |........Z3... +.|

    000000c0  66 ff 06 11 00 03 16 0f  00 8e c2 ff 06 16 00 e8  |f...............|

    000000d0  4b 00 2b c8 77 ef b8 00  bb cd 1a 66 23 c0 75 2d  |K.+.w......f#.u-|

    000000e0  66 81 fb 54 43 50 41 75  24 81 f9 02 01 72 1e 16  |f..TCPAu$....r..|

    000000f0  68 07 bb 16 68 70 0e 16  68 09 00 66 53 66 53 66  |h...hp..h..fSfSf|

    00000100  55 16 16 16 68 b8 01 66  61 0e 07 cd 1a 33 c0 bf  |U...h..fa....3..|

    00000110  28 10 b9 d8 0f fc f3 aa  e9 5f 01 90 90 66 60 1e  |(........_...f`.|

    00000120  06 66 a1 11 00 66 03 06  1c 00 1e 66 68 00 00 00  |.f...f.....fh...|

    00000130  00 66 50 06 53 68 01 00  68 10 00 b4 42 8a 16 0e  |.fP.Sh..h...B...|

    00000140  00 16 1f 8b f4 cd 13 66  59 5b 5a 66 59 66 59 1f  |.......fY[ZfYfY.|

    00000150  0f 82 16 00 66 ff 06 11  00 03 16 0f 00 8e c2 ff  |....f...........|

    00000160  0e 16 00 75 bc 07 1f 66  61 c3 a0 f8 01 e8 09 00  |...u...fa.......|

    00000170  a0 fb 01 e8 03 00 f4 eb  fd b4 01 8b f0 ac 3c 00  |..............<.|

    00000180  74 09 b4 0e bb 07 00 cd  10 eb f2 c3 0d 0a 41 20  |t.............A |

    00000190  64 69 73 6b 20 72 65 61  64 20 65 72 72 6f 72 20  |disk read error |

    000001a0  6f 63 63 75 72 72 65 64  00 0d 0a 42 4f 4f 54 4d  |occurred...BOOTM|

    000001b0  47 52 20 69 73 20 6d 69  73 73 69 6e 67 00 0d 0a  |GR is missing...|

    000001c0  42 4f 4f 54 4d 47 52 20  69 73 20 63 6f 6d 70 72  |BOOTMGR is compr|

    000001d0  65 73 73 65 64 00 0d 0a  50 72 65 73 73 20 43 74  |essed...Press Ct|

    000001e0  72 6c 2b 41 6c 74 2b 44  65 6c 20 74 6f 20 72 65  |rl+Alt+Del to re|

    000001f0  73 74 61 72 74 0d 0a 00  8c a9 be d6 00 00 55 aa  |start.........U.|

    00000200

  • by Loner T,Solvedanswer

    Loner T Loner T Apr 21, 2016 10:02 PM in response to cooliopatra
    Level 7 (23,828 points)
    Safari
    Apr 21, 2016 10:02 PM in response to cooliopatra

    You have two separate issues.

     

    1. Your Recovery HD is the incorrect size. It is usually 620 MB, but it is now 5.1Gb.

    2. Your MBR entry #4 is incorrect. Let us try to fix this first before we solve the other issue.

     

    A. We need to disable SIP (System Integrity Protection).

     

    1. Boot into Local Recovery (Command+R).

    2. Start Utilities -> Terminal.

    3. Type csrutil disable in Terminal and press Enter/Return.

    4. Type csrutil status.

    5. Boot normally, and type csrutil status to confirm that all individual entries are still disabled.

     

    B. Correct the MBR. Please ignore the i386 MBR errors, but not any others.

     

    sudo fdisk -e /dev/disk0

    p

    setpid 4

    07

    flag 4

    p

    w

    y

     

    Reboot and Test. If It works repeat step A with csrutil enable to re-enable SIP.

  • by cooliopatra,

    cooliopatra cooliopatra Apr 21, 2016 9:35 PM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 21, 2016 9:35 PM in response to Loner T

    omg!!!!!!! you literally saved me from rewriting my thesis!!!

    Thank you!!! I don't really understand what you did to help me but you are an absolute genius!!!!

  • by Loner T,

    Loner T Loner T Apr 22, 2016 5:59 AM in response to cooliopatra
    Level 7 (23,828 points)
    Safari
    Apr 22, 2016 5:59 AM in response to cooliopatra

    Please backup OS X, Windows and create a Windows System Restore point. Post back when you are ready, and we can address issue 1 - incorrect Recovery HD size.

  • by cooliopatra,

    cooliopatra cooliopatra Apr 22, 2016 3:26 PM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 22, 2016 3:26 PM in response to Loner T

    So i did backup my files using time machine program but does that automatically create a windows system restore point????? I know I sound so dumb but I have to be honest and say that I don't know what's the best way to backup my computer!

     

    Thanks again for all your help!!!

  • by Loner T,

    Loner T Loner T Apr 22, 2016 3:39 PM in response to cooliopatra
    Level 7 (23,828 points)
    Safari
    Apr 22, 2016 3:39 PM in response to cooliopatra

    Time Machine does not back up Windows. You should use a separate external drive and boot into Windows, format this drive exclusively for Windows backups and set it up for Backup (or File History) as appropriate.

  • by cooliopatra,

    cooliopatra cooliopatra Apr 23, 2016 3:40 AM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 23, 2016 3:40 AM in response to Loner T

    Does time machine usually take more than 6hours to backup ??? I thought it would probably take 3hrs max but clearly I was wrong!

  • by Loner T,

    Loner T Loner T Apr 23, 2016 7:13 AM in response to cooliopatra
    Level 7 (23,828 points)
    Safari
    Apr 23, 2016 7:13 AM in response to cooliopatra

    The first TM full backup takes longer than the subsequent incremental backups.

  • by cooliopatra,

    cooliopatra cooliopatra Apr 25, 2016 6:50 AM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 25, 2016 6:50 AM in response to Loner T

    hi,

    I finally finished setting up the restore point for windows and backed up my OS.

    So how do I fix the incorrect size of recovery HD??

  • by cooliopatra,

    cooliopatra cooliopatra Apr 25, 2016 7:34 AM in response to cooliopatra
    Level 1 (5 points)
    Windows Software
    Apr 25, 2016 7:34 AM in response to cooliopatra

    Can u also show me how to repartition safely??? I need more space for bootcamp and less for os

  • by Loner T,

    Loner T Loner T Apr 25, 2016 8:47 AM in response to cooliopatra
    Level 7 (23,828 points)
    Safari
    Apr 25, 2016 8:47 AM in response to cooliopatra

    Boot into Internet Recovery, and run the following command.

     

    diskutil mergePartitions jhfs+ "Macintosh HD" disk0s2 disk0s3

     

    This will put the disk space back in OSX. The order of the disk slices is critical otherwise you will lose OSX.

     

    Once you have completed the merge, re-install OSX, but be aware that you may get an older version of oSX (shipped originally with your Mac). You will need to upgrade.

     

    The other option is to install OSX on an external disk - How to install OS X on an external drive connected to your Mac - Apple Support - and upgrade it to match what is in the internal disk. Boot from this external boot disk in Local Recovery (not Internet Recovery) and re-install OSX. Please ensure you choose the internal disk as a destination to rebuild Recovery HD.

  • by Loner T,

    Loner T Loner T Apr 25, 2016 8:50 AM in response to cooliopatra
    Level 7 (23,828 points)
    Safari
    Apr 25, 2016 8:50 AM in response to cooliopatra

    cooliopatra wrote:

     

    Can u also show me how to repartition safely??? I need more space for bootcamp and less for os

    It is safer to use a third-party product like Winclone or CampTune. You can use Gparted, but it requires more effort.

  • by cooliopatra,

    cooliopatra cooliopatra Apr 25, 2016 9:50 AM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 25, 2016 9:50 AM in response to Loner T

    So I followed the first option and now reintalling my osx.  It says it will take abt 3hrs.

    Thanks again for all your help!!! 

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