Nosedragon
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Q: Bootcamp not accessible after Yosemite update

So here I start a new thread...

 

What I did:

 

I updated my Mavericks to Yosemite and after installing it my bootcamp partition seemed to be gone!

Just possible to boot the Mac partition and I saw that I now have a recovery partition which I didn't have yet.

In Disk Utility I can see that there is a partition but its called disk0s4 and is inaktive...cant activate it.

 

Due several tries i could manage that while restarting the mac and pressing ALT the Bootcamp Partition came up again but choosing it it says "Operating System is missing"

 

What am I to do now?

I really need that data on the BC partition but I can't even read the data.

 

Would be very thankful if someone helped me...thanks.

 

Its a MBP 17" mid 2009. On a 500GB Samsung 840 Evo SSD

Posted on Mar 22, 2015 8:26 AM

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Nosedragon

Q: Bootcamp not accessible after Yosemite update

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  • by Nosedragon,

    Nosedragon Nosedragon Mar 27, 2015 4:27 PM in response to Nosedragon
    Level 1 (0 points)
    Mar 27, 2015 4:27 PM in response to Nosedragon

    what shall i put in for step 8 in rebuilding GPT4?

     

    976771072?

  • by Nosedragon,

    Nosedragon Nosedragon Mar 27, 2015 4:28 PM in response to Loner T
    Level 1 (0 points)
    Mar 27, 2015 4:28 PM in response to Loner T

    what shall i put in for step 8 in rebuilding GPT4?

     

    976771072?

  • by Loner T,

    Loner T Loner T Mar 27, 2015 4:34 PM in response to Nosedragon
    Level 7 (24,800 points)
    Safari
    Mar 27, 2015 4:34 PM in response to Nosedragon

    You can use the + sign and put the size. In step 8 I have shown the + sign value. If you use the end value, then do not use the + sign.

  • by Nosedragon,

    Nosedragon Nosedragon Mar 27, 2015 4:49 PM in response to Loner T
    Level 1 (0 points)
    Mar 27, 2015 4:49 PM in response to Loner T

    did i do something wrong?

     

    edit: Yes i did...i got it now....can I redo it?

     

     

     

    Sudo gdisk /dev/disk0

    Password:

    GPT fdisk (gdisk) version 1.0.0

     

    Warning: Devices opened with shared lock will not have their

    partition table automatically reloaded!

    Partition table scan:

      MBR: hybrid

      BSD: not present

      APM: not present

      GPT: present

     

    Found valid GPT with hybrid MBR; using GPT.

     

    Command (? for help): p

    Disk /dev/disk0: 976773168 sectors, 465.8 GiB

    Logical sector size: 512 bytes

    Disk identifier (GUID): 764C7856-DBFF-4D82-B7E9-26496AA9D8E6

    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 11661077 sectors (5.6 GiB)

     

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

       1              40          409639   200.0 MiB   EF00  EFI System Partition

       2          409640       558397919   266.1 GiB   AF00  Macintosh SSD

       3       558397920       559667455   619.9 MiB   AB00  Recovery HD

       4       571326464       976771071   193.3 GiB   0700  Microsoft basic data

     

    Command (? for help): r

     

    Recovery/transformation command (? for help): h

     

    WARNING! Hybrid MBRs are flaky and dangerous! If you decide not to use one,

    just hit the Enter key at the below prompt and your MBR partition table will

    be untouched.

     

    Type from one to three GPT partition numbers, separated by spaces, to be

    added to the hybrid MBR, in sequence: 2 3 4

    Place EFI GPT (0xEE) partition first in MBR (good for GRUB)? (Y/N): y

     

    Creating entry for GPT partition #2 (MBR partition #2)

    Enter an MBR hex code (default AF): n

    Set the bootable flag? (Y/N): n

     

    Creating entry for GPT partition #3 (MBR partition #3)

    Enter an MBR hex code (default AB): y

    Set the bootable flag? (Y/N):

  • by Nosedragon,

    Nosedragon Nosedragon Mar 27, 2015 5:10 PM in response to Nosedragon
    Level 1 (0 points)
    Mar 27, 2015 5:10 PM in response to Nosedragon

    OK....

     

    I opened a new terminal and did the MBR rebuild again...

     

    first test: negative

    following tests as well!

  • by Loner T,

    Loner T Loner T Mar 27, 2015 6:24 PM in response to Nosedragon
    Level 7 (24,800 points)
    Safari
    Mar 27, 2015 6:24 PM in response to Nosedragon

    Nosedragon wrote:

     

    Oh I am very sorry!!!

     

    I totally forgot to tell that I changed partition size of the Macintosh Partition cause I read somewhere here that this might help...

    but I didn't change it back so I have a small undefined part on my disk....

     

    can I still do the procedure you explained?

    Was the Macintosh HD Partition shrunk or extended?

  • by Nosedragon,

    Nosedragon Nosedragon Mar 27, 2015 11:06 PM in response to Loner T
    Level 1 (0 points)
    Mar 27, 2015 11:06 PM in response to Loner T

    I shrunk it from 292GB to 285GB

  • by Loner T,

    Loner T Loner T Mar 28, 2015 5:00 AM in response to Nosedragon
    Level 7 (24,800 points)
    Safari
    Mar 28, 2015 5:00 AM in response to Nosedragon

    Can you check this partition?

     

    D MS Data                433719265  839163872  405444608

  • by Nosedragon,

    Nosedragon Nosedragon Mar 30, 2015 1:05 AM in response to Loner T
    Level 1 (0 points)
    Mar 30, 2015 1:05 AM in response to Loner T

    TestDisk 7.0-WIP, Data Recovery Utility, March 2015

    Christophe GRENIER <grenier@cgsecurity.org>

    http://www.cgsecurity.org

     

         MS Data                433719265  839163872  405444608

     

     

     

    Can't open filesystem. Filesystem seems damaged.

  • by Nosedragon,

    Nosedragon Nosedragon Mar 30, 2015 1:11 AM in response to Loner T
    Level 1 (0 points)
    Mar 30, 2015 1:11 AM in response to Loner T

    This is how it GPT looks like now....

     

    sudo gpt -vv -r show /dev/disk0

    Password:

    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  557988280      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

      558397920    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      559667456   11659008        

      571326464  405444608      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

      976771072       2063        

      976773135         32         Sec GPT table

      976773167          1         Sec GPT header

     

     

    and a new search I did 6h ago....

     

    TestDisk 7.0-WIP, Data Recovery Utility, March 2015

    Christophe GRENIER <grenier@cgsecurity.org>

    http://www.cgsecurity.org

     

    Disk /dev/rdisk0 - 500 GB / 465 GiB - 976773168 sectors (RO)

         Partition               Start        End    Size in sectors

    P EFI System                    40     409639     409600 [EFI]

    D Mac HFS                   409640  558397919  557988280

    D Mac HFS                 12125992  570114271  557988280

    >D MS Data                433719265  839163872  405444608

    D MS Data                436503201  841947808  405444608

    D Mac HFS                558397920  559667455    1269536

    D Mac HFS                570114272  571383807    1269536

    D MS Data                571326464  976771071  405444608

    D MS Data                571383808  976773119  405389312

    D MS Data                578531259  578537432       6174

    D MS Data                578537432  578543605       6174 [Boot]

    D MS Data                578537451  578543624       6174

    D MS Data                578543624  578549797       6174 [Boot]

    D MS Data                578543643  578549816       6174

    D MS Data                578549816  578555989       6174 [Boot]

    D MS Data                578555992  578558871       2880 [EFISECTOR]

    D MS Data                578558872  578561751       2880 [EFISECTOR]

    D Mac HFS                580316100  588704709    8388610 [    D^A]

    D MS Data                608137196  608142955       5760

    D Mac HFS                608816208  608816302         95

    D Mac HFS                664010245  664010339         95

    D Mac HFS                664977397  664977491         95

    D MS Data                786288772  786294531       5760

     

     

     

    shall I try to rebuild GPT and MBR again so the gap closes??

  • by Nosedragon,

    Nosedragon Nosedragon Apr 9, 2015 1:44 AM in response to Nosedragon
    Level 1 (0 points)
    Apr 9, 2015 1:44 AM in response to Nosedragon

    Well...

     

    I managed to save all my Data with NTFS Undelete and did a clean new installation of Bootcamp...

    I also wrote to Apple to please fix this problem for future Software Versions!

     

    But thank you so much for help and patience!

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