ozeegers

Q: bootcamp partition renamed untitled after booting in MacOS

Can anybody please help me ?

 

I had succesfully installed Windows 10 on my Macbook Pro and ran Windows already several weeks smoothly.

Unfortunately I did not make a backup of my windows files yet.

 

Today when I booted to El Capitan to connect my iPad to iTunes Windows gave me a message that it needed repair when I tried to reboot to the bootcamp Windows version.

It did not succeed in repairing and only gave my an advanced options menu.

I booted back into MacOS to find that the windows partition was renamed to 'Untitled' and that no files were visible in Finder.

 

I than ran Disk Utility and selected First Aid on this partition, I thought this was read only to check for disk errors.

Now when booting from Windows it says no operation system available and Disk Utility shows 496 GB empty space on this partition !

 

I hope not all my files are lost !!

What can I do to repair the bootcamp partition ? I tried to install setup bootcamp files on USB but cannot boot from USB (does not show the USB drive)

 

thank you !

 

Olivier

MacBook Pro, OS X El Capitan (10.11.3), Bootcamp Windows 10

Posted on Apr 5, 2016 11:34 AM

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Q: bootcamp partition renamed untitled after booting in MacOS

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  • by Loner T,

    Loner T Loner T Apr 27, 2016 6:12 AM in response to ozeegers
    Level 7 (24,202 points)
    Safari
    Apr 27, 2016 6:12 AM in response to ozeegers

    This is a list of unrecoverable partitions. Press Enter/return to Continue and you should see a list of viable partitions.

  • by ozeegers,

    ozeegers ozeegers Apr 27, 2016 7:54 AM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 27, 2016 7:54 AM in response to Loner T

    Yes I did this already, it was just to show you if there was more information in it.

    I posted a lot of posts after your last answer.... it begins here :       Link to this post     

     

    Can you give me some more advice ;-) thank you

  • by Loner T,

    Loner T Loner T Apr 27, 2016 8:57 AM in response to ozeegers
    Level 7 (24,202 points)
    Safari
    Apr 27, 2016 8:57 AM in response to ozeegers

    ozeegers wrote:

     

    this is the p listing of the second MSDATA entry:

     

    TestDisk 7.0, Data Recovery Utility, April 2015

    Christophe GRENIER <grenier@cgsecurity.org>

    http://www.cgsecurity.org

         MS Data                539879424 1465145343  925265920

    Directory /

     

    >dr-xr-xr-x     0     0         0  5-Apr-2016 23:59 .

    dr-xr-xr-x     0     0         0  5-Apr-2016 23:59 ..

    -r--r--r--     0     0 4294967296  5-Apr-2016 13:52 pagefile.sys

     

    Can you modify your GPT4  to be this one? This also matches your original MBR in the second post on the first page.

    *4: 07 1023 254  63 - 1023 254  63 [ 539879424 -  925265920] HPFS/QNX/AUX

  • by ozeegers,

    ozeegers ozeegers Apr 27, 2016 10:07 AM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 27, 2016 10:07 AM in response to Loner T

    did the above, no files visible in finder....

     

    sudo gpt -vv -r show /dev/disk0:


    sudo gpt -vv -r show /dev/disk0

    Password:

    gpt show: /dev/disk0: mediasize=750156374016; sectorsize=512; blocks=1465149168

    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 1465149167

           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   538198808      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

       538608448     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

       539877984        1440        

       539879424   925265920      4  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

      1465145344        3791        

      1465149135          32         Sec GPT table

      1465149167           1         Sec GPT header

     

    sudo fdisk /dev/disk0

    Disk: /dev/disk0 geometry: 91201/255/63 [1465149168 sectors]

    Signature: 0xAA55

             Starting       Ending

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

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

    1: EE    0   0   2 -   25 127  14 [         1 -     409639] <Unknown ID>

    2: AF   25 127  15 - 1023 254  63 [    409640 -  538198808] HFS+       

    3: AB 1023 254  63 - 1023 254  63 [ 538608448 -    1269536] Darwin Boot

    *4: AF 1023 254  63 - 1023 254  63 [ 539879424 -  925265920] HFS+

  • by Loner T,

    Loner T Loner T Apr 27, 2016 10:39 AM in response to ozeegers
    Level 7 (24,202 points)
    Safari
    Apr 27, 2016 10:39 AM in response to ozeegers

    Your last MBR entry should match what you have on first page.

  • by ozeegers,

    ozeegers ozeegers Apr 27, 2016 10:48 AM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 27, 2016 10:48 AM in response to Loner T

    oh, how do i do this ? I changed the GPT and did part 2 following Re: El Capitan has deleted my bootcamp windows partition

    how do I only change the MBR now ?

     

    thank you

  • by Loner T,

    Loner T Loner T Apr 27, 2016 10:51 AM in response to ozeegers
    Level 7 (24,202 points)
    Safari
    Apr 27, 2016 10:51 AM in response to ozeegers

    Repeat the second set of Gdisk steps - the Rebuild MBR section.

  • by ozeegers,

    ozeegers ozeegers Apr 27, 2016 11:00 AM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 27, 2016 11:00 AM in response to Loner T

    I did this ? with a reboot in between  ? you mean the hybrid 2 3 4 part ?

     

    Recovery/transformation command (? for help): O

     

    Disk size is 1465149168 sectors (698.6 GiB)

    MBR disk identifier: 0x4DD05DE5

    MBR partitions:

     

    Number  Boot  Start Sector   End Sector   Status      Code

       1                     1       409639   primary     0xEE

       2                409640    538608447   primary     0xAF

       3             538608448    539877983   primary     0xAB

       4      *      539879424   1465145343   primary     0xAF

  • by Loner T,

    Loner T Loner T Apr 27, 2016 11:48 AM in response to ozeegers
    Level 7 (24,202 points)
    Safari
    Apr 27, 2016 11:48 AM in response to ozeegers

    The code column for the fourth entry should be 07. This is the hybrid MBR part.

  • by ozeegers,

    ozeegers ozeegers Apr 27, 2016 12:11 PM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 27, 2016 12:11 PM in response to Loner T

    ah ! it was default on AF.... rebooting

  • by ozeegers,

    ozeegers ozeegers Apr 27, 2016 12:19 PM in response to ozeegers
    Level 1 (5 points)
    Windows Software
    Apr 27, 2016 12:19 PM in response to ozeegers

    still nothing visible in finder again AF00 ??

     

    sudo gpt -vv -r show /dev/disk0

    Password:

    gpt show: /dev/disk0: mediasize=750156374016; sectorsize=512; blocks=1465149168

    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 1465149167

           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   538198808      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

       538608448     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

       539877984        1440        

       539879424   925265920      4  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

      1465145344        3791        

      1465149135          32         Sec GPT table

      1465149167           1         Sec GPT header

     

    sudo fdisk /dev/disk0

    Disk: /dev/disk0 geometry: 91201/255/63 [1465149168 sectors]

    Signature: 0xAA55

             Starting       Ending

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

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

    1: EE    0   0   2 -   25 127  14 [         1 -     409639] <Unknown ID>

    2: AF   25 127  15 - 1023 254  63 [    409640 -  538198808] HFS+       

    3: AB 1023 254  63 - 1023 254  63 [ 538608448 -    1269536] Darwin Boot

    *4: 07 1023 254  63 - 1023 254  63 [ 539879424 -  925265920] HPFS/QNX/AUX

     

    Disk /dev/rdisk0: 1465149168 sectors, 698.6 GiB

    Logical sector size: 512 bytes

    Disk identifier (GUID): BE924D70-1CD5-4EDB-9B44-947B2100D347

    Partition table holds up to 128 entries

    First usable sector is 34, last usable sector is 1465149134

    Partitions will be aligned on 8-sector boundaries

    Total free space is 5237 sectors (2.6 MiB)

     

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

       1              40          409639   200.0 MiB   EF00  EFI System

       2          409640       538608447   256.6 GiB   AF00  Apple HFS/HFS+

       3       538608448       539877983   619.9 MiB   AB00  Recovery HD

       4       539879424      1465145343   441.2 GiB   AF00  Apple HFS/HFS+

     

     

     

    again AF00 ??

  • by ozeegers,

    ozeegers ozeegers Apr 27, 2016 12:23 PM in response to ozeegers
    Level 1 (5 points)
    Windows Software
    Apr 27, 2016 12:23 PM in response to ozeegers

    I saw cleary 0x07 when I issued the write command, now it is again:

     

       4       539879424      1465145343   441.2 GiB   AF00  Apple HFS/HFS+

     

    No MS Data, what am i doing wrong ?

  • by ozeegers,

    ozeegers ozeegers Apr 27, 2016 12:28 PM in response to ozeegers
    Level 1 (5 points)
    Windows Software
    Apr 27, 2016 12:28 PM in response to ozeegers

    Sudo gdisk /dev/rdisk0

    GPT fdisk (gdisk) version 1.0.1

     

    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/rdisk0: 1465149168 sectors, 698.6 GiB

    Logical sector size: 512 bytes

    Disk identifier (GUID): BE924D70-1CD5-4EDB-9B44-947B2100D347

    Partition table holds up to 128 entries

    First usable sector is 34, last usable sector is 1465149134

    Partitions will be aligned on 8-sector boundaries

    Total free space is 5237 sectors (2.6 MiB)

     

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

       1              40          409639   200.0 MiB   EF00  EFI System

       2          409640       538608447   256.6 GiB   AF00  Apple HFS/HFS+

       3       538608448       539877983   619.9 MiB   AB00  Recovery HD

       4       539879424      1465145343   441.2 GiB   AF00  Apple HFS/HFS+

     

    Command (? for help): R

     

    Recovery/transformation command (? for help): O

     

    Disk size is 1465149168 sectors (698.6 GiB)

    MBR disk identifier: 0x4DD05DE5

    MBR partitions:

     

    Number  Boot  Start Sector   End Sector   Status      Code

       1                     1       409639   primary     0xEE

       2                409640    538608447   primary     0xAF

       3             538608448    539877983   primary     0xAB

       4      *      539879424   1465145343   primary     0x07

     

    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):

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

     

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

    Enter an MBR hex code (default AB):

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

     

    Creating entry for GPT partition #4 (MBR partition #4)

    Enter an MBR hex code (default AF): 07 

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

     

    Recovery/transformation command (? for help): O

     

    Disk size is 1465149168 sectors (698.6 GiB)

    MBR disk identifier: 0x4DD05DE5

    MBR partitions:

     

    Number  Boot  Start Sector   End Sector   Status      Code

       1                     1       409639   primary     0xEE

       2                409640    538608447   primary     0xAF

       3             538608448    539877983   primary     0xAB

       4      *      539879424   1465145343   primary     0x07

     

    Recovery/transformation command (? for help): W

     

    Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING

    PARTITIONS!!

     

    Do you want to proceed? (Y/N): Y

    OK; writing new GUID partition table (GPT) to /dev/rdisk0.

    Warning: Devices opened with shared lock will not have their

    partition table automatically reloaded!

    Warning: The kernel may continue to use old or deleted partitions.

    You should reboot or remove the drive.

    The operation has completed successfully.

  • by Loner T,

    Loner T Loner T Apr 27, 2016 12:39 PM in response to ozeegers
    Level 7 (24,202 points)
    Safari
    Apr 27, 2016 12:39 PM in response to ozeegers

    Your first set of steps when you recreate GPT4 are incorrect. Your Gpt4 entry is Hfs, so the derived MBR is incorrect. Please repeat both sets of Gdisk steps.

  • by ozeegers,

    ozeegers ozeegers Apr 27, 2016 12:53 PM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 27, 2016 12:53 PM in response to Loner T

    OMG, i really failed... sorry, correcting again

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