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 25, 2015 2:38 PM in response to Loner T
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    Mar 25, 2015 2:38 PM in response to Loner T

    nope...says the same: "seems damaged"

     

    but I found this one:

     

    TestDisk 6.14, Data Recovery Utility, July 2013

    Christophe GRENIER <grenier@cgsecurity.org>

    http://www.cgsecurity.org

         MS Data                578537432  578543605       6174 [Boot]

    Directory /

     

    >dr-xr-xr-x     0     0         0 15-Feb-2005 22:33 .

    dr-xr-xr-x     0     0         0 15-Feb-2005 22:33 ..

    dr-xr-xr-x     0     0         0 15-Feb-2005 22:33 System Volume Information

     

     

     

     

    and this:

     

     

    TestDisk 6.14, Data Recovery Utility, July 2013

    Christophe GRENIER <grenier@cgsecurity.org>

    http://www.cgsecurity.org

         MS Data                578543624  578549797       6174 [Boot]

    Directory /

     

    >dr-xr-xr-x     0     0         0 15-Feb-2005 22:33 .

    dr-xr-xr-x     0     0         0 15-Feb-2005 22:33 ..

    dr-xr-xr-x     0     0         0 15-Feb-2005 22:33 System Volume Information

  • by Loner T,

    Loner T Loner T Mar 25, 2015 2:42 PM in response to Nosedragon
    Level 7 (24,800 points)
    Safari
    Mar 25, 2015 2:42 PM in response to Nosedragon

    The size of 6174 sectors (~3MB) is too small to hold Windows. It has that file, because it is a volume by itself.

  • by Nosedragon,

    Nosedragon Nosedragon Mar 25, 2015 2:48 PM in response to Loner T
    Level 1 (0 points)
    Mar 25, 2015 2:48 PM in response to Loner T

    So rebuilding the GPT4 would not change anything?

    Or is there another method?

  • by Loner T,

    Loner T Loner T Mar 25, 2015 3:00 PM in response to Nosedragon
    Level 7 (24,800 points)
    Safari
    Mar 25, 2015 3:00 PM in response to Nosedragon

    1. Can you check those following partitions?

     

      MS Data                433719265  839163872  405444608

      MS Data                436503201  841947808  405444608

     

    2. Are there any partitions further down which are MS Data?

  • by Nosedragon,

    Nosedragon Nosedragon Mar 25, 2015 3:29 PM in response to Loner T
    Level 1 (0 points)
    Mar 25, 2015 3:29 PM in response to Loner T

    both show:

     

    TestDisk 6.14, Data Recovery Utility, July 2013

    Christophe GRENIER <grenier@cgsecurity.org>

    http://www.cgsecurity.org

     

         MS Data                433719265  839163872  405444608

     

     

     

    Can't open filesystem. Filesystem seems damaged.

  • by Loner T,

    Loner T Loner T Mar 25, 2015 3:37 PM in response to Nosedragon
    Level 7 (24,800 points)
    Safari
    Mar 25, 2015 3:37 PM in response to Nosedragon

    Do you any more in the list which are MS Data of this size?

  • by Nosedragon,

    Nosedragon Nosedragon Mar 25, 2015 3:40 PM in response to Loner T
    Level 1 (0 points)
    Mar 25, 2015 3:40 PM in response to Loner T

    no :-(

     

    just these 4

     

       MS Data                433719265  839163872  405444608

    >  MS Data                436503201  841947808  405444608

       MS Data                571326464  976771071  405444608 [BOOTCAMP]

       MS Data                571383808  976773119  405389312

  • by Loner T,

    Loner T Loner T Mar 25, 2015 4:03 PM in response to Nosedragon
    Level 7 (24,800 points)
    Safari
    Mar 25, 2015 4:03 PM in response to Nosedragon

    The triplet you see in Testdisk are start/end/size. If we assume that your first 6174 entry is the correct start of NTFS, we get the following table.

     

    GPT 3 StartGPT 3 SizeGPT 3 EndNTFS StartSector OffsetNTFS SizeNTFS EndSector Offset (MB)
    5583979201269536559667456578537432188699764054446089839820409213.855469
    5583979201269536559667456578537432188699764053893129839267449213.855469

     

    I have assumed the same start and used bot size values.

     

    The problem with this is that your disk is 976773168 sectors. If you look at NTFS End value, it is beyond number of sectors you have on the full disk. This makes either start values unusable.

     

    We can try it and force the end to be 976773120 which came from your GPT output. The 15 bytes can be consumed which will make the end to be 976773120 which is one byte before the secondary GPT entry.

  • by Nosedragon,

    Nosedragon Nosedragon Mar 25, 2015 4:16 PM in response to Loner T
    Level 1 (0 points)
    Mar 25, 2015 4:16 PM in response to Loner T

    So what shall I do now?

    open another terminal?

     

    but isn't right?

    my disk is 976773168 sectors and the 2nd part ends at 976773119

     

    that fits..!?

  • by Loner T,

    Loner T Loner T Mar 25, 2015 4:22 PM in response to Nosedragon
    Level 7 (24,800 points)
    Safari
    Mar 25, 2015 4:22 PM in response to Nosedragon

    If you are referring to this entry

    MS Data                571383808  976773119  405389312

    it is the same as the following

    571383808  405389312      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

    This entry is not working for you.

  • by Nosedragon,

    Nosedragon Nosedragon Mar 25, 2015 4:28 PM in response to Loner T
    Level 1 (0 points)
    Mar 25, 2015 4:28 PM in response to Loner T

    so there is actually no real part in size that could be the gap between GPT3 and GPT4..?

     

    What can I do? Or rather how do I do it?

  • by Loner T,

    Loner T Loner T Mar 25, 2015 4:32 PM in response to Nosedragon
    Level 7 (24,800 points)
    Safari
    Mar 25, 2015 4:32 PM in response to Nosedragon

    Do you have files in your BC partition that you need to save?

  • by Nosedragon,

    Nosedragon Nosedragon Mar 25, 2015 4:44 PM in response to Loner T
    Level 1 (0 points)
    Mar 25, 2015 4:44 PM in response to Loner T

    Yes definitely.

    Most important are files like Outlook and from other saving from CAD software.

  • by Loner T,

    Loner T Loner T Mar 25, 2015 5:04 PM in response to Nosedragon
    Level 7 (24,800 points)
    Safari
    Mar 25, 2015 5:04 PM in response to Nosedragon

    You can try PhotoRec (which is downloaded as part of Testdisk). You may not get proper file names.

  • by Nosedragon,

    Nosedragon Nosedragon Mar 25, 2015 5:10 PM in response to Loner T
    Level 1 (0 points)
    Mar 25, 2015 5:10 PM in response to Loner T

    in photorec i choose >Disk /dev/rdisk0 - 500 GB / 465 GiB (RO)

    and search on the 4th partition which is named BOOTCAMP?

     

    (disk1 is a second ssd in this current MBP)

     

    PhotoRec 6.14, Data Recovery Utility, July 2013

    Christophe GRENIER <grenier@cgsecurity.org>

    http://www.cgsecurity.org

     

      PhotoRec is free software, and

    comes with ABSOLUTELY NO WARRANTY.

     

    Select a media (use Arrow keys, then press Enter):

    Disk /dev/disk0 - 500 GB / 465 GiB (RO)

    Disk /dev/disk1 - 500 GB / 465 GiB (RO)

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

    Disk /dev/rdisk1 - 500 GB / 465 GiB (RO)

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