colinkoenig
Level 1 (0 points)

Q: Bootcamp partition missing after yosemite installation

I am running OS X 10.10.1 currently. Right after I upgraded to Yosemite my windows 7 partition was missing. I have all of my school work and programs on that partition and I use it quite often. I have seen other questions similar to this but none with an external hard drive backed up like I do. I tried to repair the windows 7 partition with disk utility but it appears to just be floating in cyber space unrecognizable and unrepairable. Something happened when I "upgraded" to Yosemite.

 

Thankfully, I have an external hard drive with both my Macbook partition as well as my windows 7 partition saved on to my external hard drive. I went the extra mile and partitioned my external hard drive as well with a macbook partition and a windows 7 partition so they are not in the same part of the hard drive. Unfortunately I'm a little rusty with my tech skills now. How can I just restore this back to what it was? time machine won't restore my windows 7 partition. I just want everything back to where it was originally, I don't care about yosemite. I'm quite sure that I didn't overwrite the windows 7 partition on my external hard drive because it doesn't exist on this new operating system, so it must be in my external drive. Can someone please give me some direction for a beginner on stuff like this?

MacBook Pro (15-inch Mid 2012)

Posted on Mar 4, 2015 2:35 PM

by Loner T,Solvedanswer
Loner T Loner T
Level 7 (24,738 points)
Safari
A:

Leave your Testdisk display and start a new Terminal Window. Please use the following steps.

 

You need to use the following steps. If you see any error messages during the following steps, please stop and post back here with the error message. The following steps have values from your Testdisk output (and you can verify) in Steps 7 and 8.

 

Rebuild GPT4 using start/end offsets

 

  1. Sudo gdisk /dev/rdisk0
  2. P  (print the full list of parts)
  3. D  (delete)
  4. 4  (part 4)
  5. N  (new part)
  6. 4   (part 4)
  7. 779970560 - Start offset in bytes  (start point for Bootcamp part)
  8. +196802553 (Size offset as opposed to End offset)
  9. 0700     (Windows part type)
  10. P           (print list of all parts just to see what changes will be made)
  11. W         (Write the new GPT)
  12. Y           (Yes! really write the new GPT)

  This will delete and re-write the GPT partition info for /dev/disk0s4. 


Rebuild MBR to match the new GPT information thus resetting the Hybrid MBR. Use defaults for other questions (like partition codes). The only values that need modifications are the Boot flags and step 6. Accept all other defaults that Gdisk offers.


  1. Sudo gdisk /dev/disk0
  2. P  (Print list of parts)
  3. R   (Recover)
  4. H (chooses Hybrid)
  5. Partitions numbers to be hybridized: 2 3 4
  6. Y (Good for GRUB question)
  7. N (part 2 boot flag)
  8. N (part 3 boot flag)
  9. Y  (part 4 boot flag make NTFS bootable partition)
  10. W  (Write the new MBR)
  11. Y    (Yes! write the new MBR)
  12. Reboot

 

Test 1 - Does Bootcamp Volume show up in Finder?

Test 2 - Can you see files in Bootcamp Volume?

Test 3 - Can you select Bootcamp in System Preferences -> Startup Disk?

Test 4 - If Test 3 is successful, select Bootcamp and Click Restart.

Posted on Mar 4, 2015 6:18 PM

Close
colinkoenig

Q: Bootcamp partition missing after yosemite installation

  • All replies
  • Helpful answers

first Previous Page 4 of 4

  • by kswint,

    kswint kswint Apr 23, 2015 12:26 PM in response to Loner T
    Level 1 (0 points)
    Apr 23, 2015 12:26 PM in response to Loner T

    Yes, but to my understanding, to use the Upgrade option you have to be able to boot up the machine in Windows, not from an install disk, which I can't do (yet?). Any other method is the Custom option. I have an app that supposedly can fix this BOOTMGR problem, but I have to boot the machine from a .ios file on a USB in order to use it. Trying to figure that out now.

  • by kswint,

    kswint kswint Apr 23, 2015 6:20 PM in response to Loner T
    Level 1 (0 points)
    Apr 23, 2015 6:20 PM in response to Loner T

    I gave up and did the custom install, for which Bootcamp requires it's own non-obvious partitioning/formatting tricks. Anyway, I was able to rescue all of my windows data thanks to your help. You're building some serious karma points, thank you!

  • by Loner T,

    Loner T Loner T Apr 23, 2015 6:29 PM in response to kswint
    Level 7 (24,738 points)
    Safari
    Apr 23, 2015 6:29 PM in response to kswint

    I was out most of the day and could not provide any further input. I am glad to see your data is safe.

     

    I suggest backups of both OSes on separate external disks, as a baseline for the future restore, if you need them.

  • by m3tropolis,

    m3tropolis m3tropolis Jun 10, 2015 8:11 PM in response to Loner T
    Level 1 (0 points)
    Jun 10, 2015 8:11 PM in response to Loner T

    Loner T - THANK YOU!

     

    You saved my butt from having to reinstall my bootcamp partition. Thank you!

     

    Note to Apple: please release software that doesn't screw your customers over. Really. Shame on you.

  • by Loner T,

    Loner T Loner T Jun 10, 2015 8:18 PM in response to m3tropolis
    Level 7 (24,738 points)
    Safari
    Jun 10, 2015 8:18 PM in response to m3tropolis

    m3tropolis wrote:

     

    Note to Apple: please release software that doesn't screw your customers over. Really. Shame on you.

    I have provided feedback to Apple via bug reports, etc. My contact with Apple folks has been very encouraging and positive.

     

    I am glad that you were able to successfully resolve issues. Please make backups at the earliest you can.

  • by humgurung,

    humgurung humgurung Aug 9, 2015 3:22 AM in response to Loner T
    Level 1 (0 points)
    Aug 9, 2015 3:22 AM in response to Loner T

    Loner T,

    I had OS X 10.x (possibly Snow Leopard) and Bootcamp (Windows XP). I upgraded OS X to 10.11 El Captain Beta. Unfortunately, I can not use my Windows XP now, it says; 'No bootable device --- insert boot disk press any key' though I start Bootcamp from start up manager. I can see the bootcamp partition and files in mac finder. When I try to select and boot by pressing option key there are only two menu icon 'Mac OS' and 'Recovery 10.11' but no 'bootcamp'. Some information:

     

    # diskutil list

     

       #:                       TYPE NAME                            SIZE                  IDENTIFIER

       0:      GUID_partition_scheme                           *500.1 GB               disk0

       1:      EFI EFI                                                      209.7 MB               disk0s1

       2:      Apple_HFS Macintosh HD                        96.3 GB                 disk0s2

       3:      Apple_Boot Recovery HD                         650.0 MB               disk0s3

       4:      Microsoft Basic Data SERVER                 315.9 GB               disk0s4

       5:      Microsoft Basic Data BOOTCAMP           87.1 GB                 disk0s5

     

    # gpt -vv -r show /dev/disk0

    gpt show: /dev/disk0: mediasize=500107862016; sectorsize=512; blocks=976773168

    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 976773167

          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  188012728      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

      188422368    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      189691904  617058304      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

      806750208  170022912      5  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

      976773120         15        

      976773135         32         Sec GPT table

      976773167          1         Sec GPT header


    # fdisk /dev/disk0

    Disk: /dev/disk0 geometry: 60801/255/63 [976773168 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 -  188012728] HFS+       

    3: AB 1023 254  63 - 1023 254  63 [ 188422368 -    1269536] Darwin Boot

    4: 0B 1023 254  63 - 1023 254  63 [ 189691904 -  617058304] Win95 FAT-32


    Please help.

     

    Hum

  • by Loner T,

    Loner T Loner T Aug 10, 2015 11:23 AM in response to humgurung
    Level 7 (24,738 points)
    Safari
    Aug 10, 2015 11:23 AM in response to humgurung

    Please post the output of

     

    sudo dd if=/dev/rdisk0s5 count=1 2>/dev/null | hexdump -C

     

    You have a non-standard configuration which has the SERVER partition. It can be supported. Currently, you are pointing to the SERVER partition. Is that the Bootable Windows installation?

  • by humgurung,

    humgurung humgurung Aug 10, 2015 1:45 PM in response to Loner T
    Level 1 (0 points)
    Aug 10, 2015 1:45 PM in response to Loner T

    Hi,

    Thank you for reply. 'SERVER' is a partition for localhost purpose and documents which is not bootable. Here is the output as you suggested:


    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 2d 00 00 08 16 30  |........?.-....0|

    00000020  00 00 00 00 80 00 80 00  ff 57 22 0a 00 00 00 00  |.........W".....|

    00000030  00 00 0c 00 00 00 00 00  30 0c 00 00 00 00 00 00  |........0.......|

    00000040  f6 00 00 00 01 00 00 00  8f 99 70 98 c9 70 98 a6  |..........p..p..|

    00000050  9e 71 ef d9 fa 33 c0 8e  d0 bc 00 7c fb b8 c0 07  |.q...3.....|....|

    00000060  8e d8 e8 16 00 b8 00 0d  8e c0 33 db c6 06 0e 00  |..........3.....|

    00000070  10 e8 53 00 68 00 0d 68  6a 02 cb 8a 16 24 00 b4  |..S.h..hj....$..|

    00000080  08 cd 13 73 05 b9 ff ff  8a f1 66 0f b6 c6 40 66  |...s......f...@f|

    00000090  0f b6 d1 80 e2 3f f7 e2  86 cd c0 ed 06 41 66 0f  |.....?.......Af.|

    000000a0  b7 c9 66 f7 e1 66 a3 20  00 c3 b4 41 bb aa 55 8a  |..f..f. ...A..U.|

    000000b0  16 24 00 cd 13 72 0f 81  fb 55 aa 75 09 f6 c1 01  |.$...r...U.u....|

    000000c0  74 04 fe 06 14 00 c3 66  60 1e 06 66 a1 10 00 66  |t......f`..f...f|

    000000d0  03 06 1c 00 66 3b 06 20  00 0f 82 3a 00 1e 66 6a  |....f;. ...:..fj|

    000000e0  00 66 50 06 53 66 68 10  00 01 00 80 3e 14 00 00  |.fP.Sfh.....>...|

    000000f0  0f 85 0c 00 e8 b3 ff 80  3e 14 00 00 0f 84 61 00  |........>.....a.|

    00000100  b4 42 8a 16 24 00 16 1f  8b f4 cd 13 66 58 5b 07  |.B..$.......fX[.|

    00000110  66 58 66 58 1f eb 2d 66  33 d2 66 0f b7 0e 18 00  |fXfX..-f3.f.....|

    00000120  66 f7 f1 fe c2 8a ca 66  8b d0 66 c1 ea 10 f7 36  |f......f..f....6|

    00000130  1a 00 86 d6 8a 16 24 00  8a e8 c0 e4 06 0a cc b8  |......$.........|

    00000140  01 02 cd 13 0f 82 19 00  8c c0 05 20 00 8e c0 66  |........... ...f|

    00000150  ff 06 10 00 ff 0e 0e 00  0f 85 6f ff 07 1f 66 61  |..........o...fa|

    00000160  c3 a0 f8 01 e8 09 00 a0  fb 01 e8 03 00 fb eb fe  |................|

    00000170  b4 01 8b f0 ac 3c 00 74  09 b4 0e bb 07 00 cd 10  |.....<.t........|

    00000180  eb f2 c3 0d 0a 41 20 64  69 73 6b 20 72 65 61 64  |.....A disk read|

    00000190  20 65 72 72 6f 72 20 6f  63 63 75 72 72 65 64 00  | error occurred.|

    000001a0  0d 0a 4e 54 4c 44 52 20  69 73 20 6d 69 73 73 69  |..NTLDR is missi|

    000001b0  6e 67 00 0d 0a 4e 54 4c  44 52 20 69 73 20 63 6f  |ng...NTLDR is co|

    000001c0  6d 70 72 65 73 73 65 64  00 0d 0a 50 72 65 73 73  |mpressed...Press|

    000001d0  20 43 74 72 6c 2b 41 6c  74 2b 44 65 6c 20 74 6f  | Ctrl+Alt+Del to|

    000001e0  20 72 65 73 74 61 72 74  0d 0a 00 00 00 00 00 00  | restart........|

    000001f0  00 00 00 00 00 00 00 00  83 a0 b3 c9 00 00 55 aa  |..............U.|

    00000200

  • by Loner T,

    Loner T Loner T Aug 10, 2015 2:51 PM in response to humgurung
    Level 7 (24,738 points)
    Safari
    Aug 10, 2015 2:51 PM in response to humgurung

    Can you start a new discussion and post these two on that thread? It will avoid confusion between your issues and the OP?

  • by humgurung,

    humgurung humgurung Aug 10, 2015 3:22 PM in response to Loner T
    Level 1 (0 points)
    Aug 10, 2015 3:22 PM in response to Loner T

    New discussion started @ Bootcamp not working after El Captain Beta installation

  • by humgurung,

    humgurung humgurung Aug 11, 2015 1:17 AM in response to humgurung
    Level 1 (0 points)
    Aug 11, 2015 1:17 AM in response to humgurung

    Bootcamp not working after El Captain Beta installation

  • by thomasds20,

    thomasds20 thomasds20 Aug 19, 2015 10:19 PM in response to colinkoenig
    Level 1 (0 points)
    Aug 19, 2015 10:19 PM in response to colinkoenig

    Hello there, can someone help me to solve this problem?

    Yesterday i was update my windows 7, in a middle processing my macbook suddenly restart and reboot to mac osx. And then my bootcamp partition gone.

    I tried to check with sudo but the partition is not there.

    Screen Shot 2015-08-20 at 12.09.46 PM.png

    Screen Shot 2015-08-20 at 12.18.26 PM.png

  • by Loner T,

    Loner T Loner T Aug 20, 2015 1:19 PM in response to thomasds20
    Level 7 (24,738 points)
    Safari
    Aug 20, 2015 1:19 PM in response to thomasds20

    Can you start a new discussion to avoid confusion with the original discussion?

  • by thomasds20,

    thomasds20 thomasds20 Aug 21, 2015 12:19 AM in response to Loner T
    Level 1 (0 points)
    Aug 21, 2015 12:19 AM in response to Loner T

    Ok here i the new discussion page

    Bootcamp partition missing when updating windows

first Previous Page 4 of 4