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 13, 2016 5:15 AM in response to ozeegers
    Level 7 (24,611 points)
    Safari
    Apr 13, 2016 5:15 AM in response to ozeegers

    You can download Testdisk from http://www.cgsecurity.org/wiki/TestDisk_Download .

     

    Please see El Capitan has deleted my bootcamp windows partition as an example of it's use to discover 'lost' partitions.

     

    Let us make sure we do not make things worse. We want to avoid permanent data loss.

  • by ozeegers,

    ozeegers ozeegers Apr 13, 2016 5:33 AM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 13, 2016 5:33 AM in response to Loner T

    sorry, very unexperienced with osx

     

    cannot succeed to run testdisk, what am i doing wrong ?

     

    Oliviers-MBP:Downloads ozeegers$ cd testdisk-7.0

    Oliviers-MBP:testdisk-7.0 ozeegers$ ls

    78 THANKS photorec

    AUTHORS VERSION photorec.8

    COPYING documentation.html qphotorec.8

    INFO fidentify readme.txt

    NEWS fidentify.8 testdisk

    README icons testdisk.8

    Oliviers-MBP:testdisk-7.0 ozeegers$ sudo testdisk

    Password:

    sudo: testdisk: command not found

    Oliviers-MBP:testdisk-7.0 ozeegers$

  • by ozeegers,

    ozeegers ozeegers Apr 13, 2016 5:43 AM in response to ozeegers
    Level 1 (5 points)
    Windows Software
    Apr 13, 2016 5:43 AM in response to ozeegers

    ok, got it..

    I should have not gone into the testdrive folder but issue the command testdrive-7.0/testdrive instead (with sudo)

    I'll read the rest in the example post..

  • by ozeegers,

    ozeegers ozeegers Apr 13, 2016 5:59 AM in response to ozeegers
    Level 1 (5 points)
    Windows Software
    Apr 13, 2016 5:59 AM in response to ozeegers

    disk not writable like other post, continued

    chose GPT/EFI

     

    then this screen:

     

    TestDisk 7.0, Data Recovery Utility, April 2015

    Christophe GRENIER <grenier@cgsecurity.org>

    http://www.cgsecurity.org

     

     

    Disk /dev/rdisk0 - 750 GB / 698 GiB (RO)

         1465149168 sectors - sector size=512

     

    >[ Analyse  ] Analyse current partition structure and search for lost partitions

    [ Advanced ] Filesystem Utils

    [ Geometry ] Change disk geometry

    [ Options  ] Modify options

    [ Quit     ] Return to disk selection

     

     

     

     

     

     

     

    Note: Correct disk geometry is required for a successful recovery. 'Analyse'

    process may give some warnings if it thinks the logical geometry is mismatched.

     

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

    TestDisk 7.0, Data Recovery Utility, April 2015

    Christophe GRENIER <grenier@cgsecurity.org>

    http://www.cgsecurity.org

     

    Disk /dev/rdisk0 - 750 GB / 698 GiB - 1465149168 sectors (RO)

    Current partition structure:

         Partition                  Start        End    Size in sectors

     

    1 P EFI System                    40     409639     409600 [EFI System]

    2 P Mac HFS                   409640  538608447  538198808 [Apple HFS/HFS+]

    3 P Mac Boot               538608448  539877983    1269536 [Recovery HD]

    Warning: number of heads/cylinder mismatches 255 (FAT) != 1 (HD)

    Warning: number of sectors per track mismatches 32 (FAT) != 1 (HD)

    4 P MS Data                539877984 1464886983  925009000 [Microsoft basic data] [BOOTCAMP]

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

                    P=Primary  D=Deleted

    >[Quick Search]  [ Backup ]

                                Try to locate partition

  • by Loner T,

    Loner T Loner T Apr 13, 2016 6:07 AM in response to ozeegers
    Level 7 (24,611 points)
    Safari
    Apr 13, 2016 6:07 AM in response to ozeegers

    Please run Quick Search. Do not make any changes via Testdisk to any partitions. It can cause worse problems because there is a hybrid MBR involved.

  • by ozeegers,

    ozeegers ozeegers Apr 13, 2016 6:15 AM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 13, 2016 6:15 AM in response to Loner T

    Screen Shot 2016-04-13 at 15.14.57.png

  • by Loner T,

    Loner T Loner T Apr 13, 2016 8:20 AM in response to ozeegers
    Level 7 (24,611 points)
    Safari
    Apr 13, 2016 8:20 AM in response to ozeegers

    This is a list of unrecoverable partitions. Press Enter/Return (only once) to Continue. You should see a list of recoverable partitions.

  • by ozeegers,

    ozeegers ozeegers Apr 13, 2016 8:37 AM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 13, 2016 8:37 AM in response to Loner T

    estDisk 7.0, Data Recovery Utility, April 2015

    Christophe GRENIER <grenier@cgsecurity.org>

    http://www.cgsecurity.org

     

    Disk /dev/rdisk0 - 750 GB / 698 GiB - 1465149168 sectors (RO)

         Partition               Start        End    Size in sectors

    >P EFI System                    40     409639     409600 [EFI]

    P Mac HFS                   409640  538608447  538198808

    P Mac HFS                538608448  539877983    1269536

    D MS Data                539877984 1464886983  925009000 [BOOTCAMP]

    D MS Data                539879424 1465145343  925265920

    D MS Data               1075445760 1465147391  389701632

    D Mac HFS               1463879592 1465149127    1269536

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Structure: Ok.  Use Up/Down Arrow keys to select partition.

    Use Left/Right Arrow keys to CHANGE partition characteristics:

                    P=Primary  D=Deleted

    Keys A: add partition, L: load backup, T: change type, P: list files,

         Enter: to continue

    FAT32, blocksize=512, 209 MB / 200 MiB

  • by ozeegers,

    ozeegers ozeegers Apr 13, 2016 8:41 AM in response to ozeegers
    Level 1 (5 points)
    Windows Software
    Apr 13, 2016 8:41 AM in response to ozeegers

    EFI SYSTEM     FAT32, blocksize=512, 209 MB / 200 MiB ; structure OK

    MAC HFS1     HFS+ blocksize=4096 + Backup, 275 GB / 256 GiB; structure OK

    MAC HFS2     HFS+ blocksize=4096 + Backup, 650 MB / 619 MiB; structure OK

    MS DATA1     FAT32, blocksize=32768, 473 GB / 441 GiB; structure OK

    MS DATA2     NTFS found using backup sector, blocksize=4096, 473 GB / 441 GiB; structure OK

    MS DATA3     NTFS found using backup sector, blocksize=4096, 199 GB / 185 GiB; structure OK

    MS DATA4     HFS+ found using backup sector!, 650 MB / 619 MiB; structure OK

  • by Loner T,

    Loner T Loner T Apr 13, 2016 9:17 AM in response to ozeegers
    Level 7 (24,611 points)
    Safari
    Apr 13, 2016 9:17 AM in response to ozeegers

    The following partition

     

    D MS Data                539877984 1464886983  925009000 [BOOTCAMP]

    is your current GPT4, which does not work.

     

    This one looks like it is the correct one.

     

    D MS Data                539879424 1465145343  925265920

    Please scroll down to this entry using the down arrow key, and press 'p' to list files. Your partition table should look like this, if this entry is the correct one.

     

    GPT 3 StartGPT 3 SizeGPT 3 EndNTFS StartSector OffsetNTFS SizeNTFS EndSector Offset (MB)NTFS(Gb)Disk EndDisk Difference
    538608448126953653987798453987942414409252659201465145343 1 441.2014651491683825
  • by ozeegers,

    ozeegers ozeegers Apr 13, 2016 9:38 AM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 13, 2016 9:38 AM in response to Loner T

    p of this 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

  • by Loner T,

    Loner T Loner T Apr 13, 2016 9:46 AM in response to ozeegers
    Level 7 (24,611 points)
    Safari
    Apr 13, 2016 9:46 AM in response to ozeegers

    Can you press Escape (only once) and check the output of the 'p' command for the other two MS Data entries?

  • by ozeegers,

    ozeegers ozeegers Apr 13, 2016 9:53 AM in response to ozeegers
    Level 1 (5 points)
    Windows Software
    Apr 13, 2016 9:53 AM in response to ozeegers

    I don't see how I move to the directory above (up). In MSDOS one selects the '..' and press ENTER but nothing happens.

    Do I have to start the sequence all over again to see files of the other entries ?

  • by Loner T,

    Loner T Loner T Apr 13, 2016 10:01 AM in response to ozeegers
    Level 7 (24,611 points)
    Safari
    Apr 13, 2016 10:01 AM in response to ozeegers

    Press Escape only once to get out of this 'p' listing.

  • by ozeegers,

    ozeegers ozeegers Apr 13, 2016 10:03 AM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 13, 2016 10:03 AM in response to Loner T

    bootcamp part:

     

    Screen Shot 2016-04-13 at 18.59.08.png

    >D MS Data               1075445760 1465147391  389701632:

     

    Screen Shot 2016-04-13 at 19.01.32.png

    >D Mac HFS               1463879592 1465149127    1269536:

     

    Screen Shot 2016-04-13 at 19.02.58.png

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