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 ozeegers,

    ozeegers ozeegers Apr 15, 2016 7:28 AM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 15, 2016 7:28 AM in response to Loner T

    first P listing:

    TestDisk 7.0, Data Recovery Utility, April 2015

    Christophe GRENIER <grenier@cgsecurity.org>

    http://www.cgsecurity.org

     

         MS Data                 77279649 1002545568  925265920

     

     

     

    Can't open filesystem. Filesystem seems damaged.

  • by ozeegers,

    ozeegers ozeegers Apr 15, 2016 7:30 AM in response to ozeegers
    Level 1 (5 points)
    Windows Software
    Apr 15, 2016 7:30 AM in response to ozeegers

    OK ! found !

     

    TestDisk 7.0, Data Recovery Utility, April 2015

    Christophe GRENIER <grenier@cgsecurity.org>

    http://www.cgsecurity.org

         MS Data                552677296  552683469       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 Apr 15, 2016 8:56 AM in response to ozeegers
    Level 7 (24,795 points)
    Safari
    Apr 15, 2016 8:56 AM in response to ozeegers

    Neither of these look like your lost NTFS partition.

  • by ozeegers,

    ozeegers ozeegers Apr 15, 2016 9:21 AM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 15, 2016 9:21 AM in response to Loner T

    this one ?

     

    TestDisk 7.0, Data Recovery Utility, April 2015

    Christophe GRENIER <grenier@cgsecurity.org>

    http://www.cgsecurity.org

         MS Data                565200272  565206445       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 ozeegers,

    ozeegers ozeegers Apr 15, 2016 9:24 AM in response to ozeegers
    Level 1 (5 points)
    Windows Software
    Apr 15, 2016 9:24 AM in response to ozeegers

    This one also has 6174 bytes, so not good ?

     

    TestDisk 7.0, Data Recovery Utility, April 2015

    Christophe GRENIER <grenier@cgsecurity.org>

    http://www.cgsecurity.org

         MS Data                576141296  576147469       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 ozeegers,

    ozeegers ozeegers Apr 15, 2016 9:27 AM in response to ozeegers
    Level 1 (5 points)
    Windows Software
    Apr 15, 2016 9:27 AM in response to ozeegers

    maybe this one ?

     

    TestDisk 7.0, Data Recovery Utility, April 2015

    Christophe GRENIER <grenier@cgsecurity.org>

    http://www.cgsecurity.org

         MS Data               1074524160 1464225791  389701632

    Directory /

     

    dr-xr-xr-x     0     0         0 23-Jan-2016 09:56 .

    dr-xr-xr-x     0     0         0 23-Jan-2016 09:56 ..

    dr-xr-xr-x     0     0         0 23-Jan-2016 09:03 $Recycle.Bin

    dr-xr-xr-x     0     0         0 22-Jan-2016 23:52 $WINDOWS.~BT

    dr-xr-xr-x     0     0         0 22-Jan-2016 18:37 $Windows.~WS

    dr-xr-xr-x     0     0         0 23-Jan-2016 09:21 AMD

    dr-xr-xr-x     0     0         0 23-Jan-2016 00:04 Boot

    dr-xr-xr-x     0     0         0 23-Jan-2016 13:50 Config.Msi

    dr-xr-xr-x     0     0         0 22-Jan-2016 18:56 ESD

    dr-xr-xr-x     0     0         0 19-Jan-2014 20:45 Intel

    dr-xr-xr-x     0     0         0 10-Mar-2014 14:59 MSOCache

    dr-xr-xr-x     0     0         0 30-Oct-2015 08:24 PerfLogs

    dr-xr-xr-x     0     0         0 23-Jan-2016 07:30 Program Files

    dr-xr-xr-x     0     0         0 23-Jan-2016 09:23 Program Files (x86)

    dr-xr-xr-x     0     0         0 23-Jan-2016 09:23 ProgramData

    dr-xr-xr-x     0     0         0 23-Jan-2016 00:33 Recovery

    >dr-xr-xr-x     0     0         0 23-Jan-2016 09:56 System Volume Information

    dr-xr-xr-x     0     0         0 23-Jan-2016 00:36 Users

    dr-xr-xr-x     0     0         0 23-Jan-2016 09:43 Windows

    dr-xr-xr-x     0     0         0 23-Jan-2016 09:22 Windows.old

    dr-xr-xr-x     0     0         0 23-Jan-2016 09:20 inetpub

    -r--r--r--     0     0         1 30-Oct-2015 08:18 BOOTNXT

    -r--r--r--     0     0      8192 23-Jan-2016 00:04 BOOTSECT.BAK

    -r--r--r--     0     0    232960  7-Nov-2007 07:12 VC_RED.MSI

    -r--r--r--     0     0   1442522  7-Nov-2007 07:09 VC_RED.cab

    -r--r--r--     0     0    400228 30-Oct-2015 08:09 bootmgr

    -r--r--r--     0     0      1110  7-Nov-2007 07:00 globdata.ini

    -r--r--r--     0     0 3151020032 23-Jan-2016 15:53 hiberfil.sys

    -r--r--r--     0     0    562688  7-Nov-2007 07:03 install.exe

    -r--r--r--     0     0       843  7-Nov-2007 07:00 install.ini

    -r--r--r--     0     0     76304  7-Nov-2007 07:03 install.res.1028.dll

    -r--r--r--     0     0     96272  7-Nov-2007 07:03 install.res.1031.dll

    -r--r--r--     0     0     91152  7-Nov-2007 07:03 install.res.1033.dll

    -r--r--r--     0     0     97296  7-Nov-2007 07:03 install.res.1036.dll

    -r--r--r--     0     0     95248  7-Nov-2007 07:03 install.res.1040.dll

    -r--r--r--     0     0     81424  7-Nov-2007 07:03 install.res.1041.dll

    -r--r--r--     0     0     79888  7-Nov-2007 07:03 install.res.1042.dll

    -r--r--r--     0     0     75792  7-Nov-2007 07:03 install.res.2052.dll

    -r--r--r--     0     0     96272  7-Nov-2007 07:03 install.res.3082.dll

  • by Loner T,

    Loner T Loner T Apr 15, 2016 9:39 AM in response to ozeegers
    Level 7 (24,795 points)
    Safari
    Apr 15, 2016 9:39 AM in response to ozeegers

    This is the correct one.

  • by Loner T,

    Loner T Loner T Apr 15, 2016 9:42 AM in response to ozeegers
    Level 7 (24,795 points)
    Safari
    Apr 15, 2016 9:42 AM in response to ozeegers

    Your partition table will look like this.

     

    GPT 3 StartGPT 3 SizeGPT 3 EndNTFS StartSector OffsetNTFS SizeNTFS EndSector Offset (MB)NTFS(Gb)Disk EndDisk Difference
    538608448126953653987798410745241605346461763897016321464225791 261,058 185.821465149168923377
  • by Loner T,

    Loner T Loner T Apr 15, 2016 9:44 AM in response to ozeegers
    Level 7 (24,795 points)
    Safari
    Apr 15, 2016 9:44 AM in response to ozeegers

    Install GPT Fdisk (aka gdisk).  Leave your Testdisk display and start a new Terminal Window. 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. Please notice the'+' sign in step 8 (this is called offset notation). The text in parentheses is for informational purpose to describe the action being taken. Gdisk has one-character commands except when entering numbers.

     

    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. 1074524160 ( - Start offset in sectors or the start point for Bootcamp part)
    8. +389701632 ( - 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 10. Accept all other defaults that Gdisk offers. Please see the sample Q&A as an example. These steps can be repeated if you make a mistake before you get to Step 12, otherwise start from Step 1 for these steps. Step 6 has numbers which are typed with a space between the numbers. Please see the sample Q&A before you execute these steps.

    1. Sudo gdisk /dev/rdisk0
    2. P  (Print list of parts)
    3. R  (Recover)
    4. O (print current Hybrid MBR)
    5. H (chooses Hybrid)
    6. Partitions numbers to be hybridized: 2 3 4
    7. Y  (Good for GRUB question)
    8. N  (part 2 boot flag)
    9. N  (part 3 boot flag)
    10. Y  (part 4 boot flag make NTFS bootable partition)
    11. O  (print current Hybrid MBR)
    12. W (Write the new MBR)
    13. Y (Yes! write the new MBR)
    14. Reboot

     

    Here is sample Q&A for this section. Please notice the Press Enter/Return.

     

    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): Press Enter/Return

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

     

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

    Enter an MBR hex code (default AB): Press Enter/Return

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

     

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

    Enter an MBR hex code (default 07): Press Enter/Return

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

     

    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.

  • by Loner T,

    Loner T Loner T Apr 15, 2016 9:46 AM in response to ozeegers
    Level 7 (24,795 points)
    Safari
    Apr 15, 2016 9:46 AM in response to ozeegers

    You will end up with about 260GB of Free Space. Once Windows works, get all your data backed up, then we can take a look at the disk space cleanup and reclamation.

  • by ozeegers,

    ozeegers ozeegers Apr 15, 2016 10:16 AM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 15, 2016 10:16 AM in response to Loner T

    Wow super!! Right now I am 2 hours in restaurant... I'll get to it when I'm home!

  • by ozeegers,

    ozeegers ozeegers Apr 15, 2016 12:02 PM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 15, 2016 12:02 PM in response to Loner T

    output p command:

     

    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 262157 sectors (128.0 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       539877984      1464886983   441.1 GiB   0700  Microsoft basic data

  • by ozeegers,

    ozeegers ozeegers Apr 15, 2016 12:06 PM in response to ozeegers
    Level 1 (5 points)
    Windows Software
    Apr 15, 2016 12:06 PM in response to ozeegers

    output P command after new partition created:

     

    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 535569525 sectors (255.4 GiB)

     

    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      1074524160      1464225791   185.8 GiB   0700  Microsoft basic data

  • by ozeegers,

    ozeegers ozeegers Apr 15, 2016 12:11 PM in response to ozeegers
    Level 1 (5 points)
    Windows Software
    Apr 15, 2016 12:11 PM in response to ozeegers

    print current hybrid MBR:

     

    Recovery/transformation command (? for help): O

     

    Disk size is 1465149168 sectors (698.6 GiB)

    MBR disk identifier: 0x00000000

    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      *     1074524160   1464225791   primary     0x07

     

    Recovery/transformation command (? for help):

  • by ozeegers,

    ozeegers ozeegers Apr 15, 2016 12:25 PM in response to Loner T
    Level 1 (5 points)
    Windows Software
    Apr 15, 2016 12:25 PM in response to Loner T

    yes !!!!!!!! files are visible again !!! you' re a champion !

    are we now going to boot in Windows ?

     

    Screen Shot 2016-04-15 at 21.21.14.png

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