randalltrini
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Q: Repair Boot Camp Partition

Dear Team,

 

I have a problem where after restoring my OSX installation to a new drive after crash, my bootcamp is not working. I get an error:

 

"No bootable device --- insert boot disk and press any key"


It is also not showing up in the OSX boot loader although Startup Disk control panel is seeing it.


My stats are: Macbook pro 13", early 2011, 8G RAM, the new 500G drive is installed in the optical bay via OWC data doubler, while the old original 320G mac drive is in the main hard drive bay.


I first tried to use bootcamp assistant to do a fresh install with the intention to restore an EASEUS backup. However after the drive was prepared and the mac rebooted to install windows, the windows install disc would not boot. I then decided re-installed Win7 to the bootcamp partition by restoring an EASUS backup by taking the drive out of the macbook pro and using a Windows PC to restore. I also tried to convert from a FAT32 file format which disk utility had done under OSX, to NTFS by using the command prompt conversion under Win7. That conversion process resulted in a cyclic redundancy error, even though the BOOTCAMP partition was showing up in disk utility as NTFS after I put back in the drive. By the way I did the NTFS conversion before restoring the backup.


Finally, when I restored the EASEUS backup, the drive got renamed from BOOTCAMP to Untitled even though I specified BOOTCAMP.


I saw in this post as commented by Christopher Murphy, to run:

sudo gpt -r -vv show disk0

sudo fdisk /dev/disk0

 

The results are as follows:

 

Randalls-MacBook-Pro:~ randalld$ sudo gpt -r -vv show disk0

gpt show: disk0: mediasize=500107862016; sectorsize=512; blocks=976773168

gpt show: disk0: Suspicious MBR at sector 0

gpt show: disk0: Pri GPT at sector 1

gpt show: 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  625484576      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

  625894216    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

  627163752      13848      

  627177600  323883008      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

  951060608   25712527      

  976773135         32         Sec GPT table

  976773167          1         Sec GPT header

 

 

Disk: /dev/disk0 geometry: 60801/255/63 [976773168 sectors]

Signature: 0xAA55

         Starting       Ending

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

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

1: EE 1023 254  63 - 1023 254  63 [         1 -     409639] <Unknown ID>

2: AF 1023 254  63 - 1023 254  63 [    409640 -  625484576] HFS+     

3: AB 1023 254  63 - 1023 254  63 [ 625894216 -    1269536] Darwin Boot

4: 0C 1023 254  63 - 1023 254  63 [ 627177600 -  323883008] Win95 FAT32L



Can someone please help?

MacBook Pro (13-inch Early 2011), OS X Mavericks (10.9.4)

Posted on Jul 19, 2014 7:55 AM

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randalltrini

Q: Repair Boot Camp Partition

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  • by Loner T,

    Loner T Loner T Aug 6, 2014 8:30 AM in response to randalltrini
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    Aug 6, 2014 8:30 AM in response to randalltrini

    Apologies I missed this thread.

    You mention two disks, one a 320G in the original SATA slot and a 500G (OWC Data doubler) in the Optibay.

     

    1. Which disk has Bootcamp?

    2. There are known SATA speed issues in the Optibay slot which cause bad behavior.

    3. Can you post the output of sudo dd if=/dev/disk0s4 count=1 2>/dev/null | hexdump -C (this will check if your NTFS header is intact or not)?

    4. Please post a diskutil list output?

    5. You can fix your MBR and try to see if it will let you see the Windows drive or not. Here are the commands.

     

    sudo fdisk -e /dev/disk0

    setpid 4

    07

    flag 4

    p

    w

    y

     

    6. You may need to execute Windows startup repair after 5, if the OSX side switches to Bootcamp, but no operating system is found.

  • by igoddie,

    igoddie igoddie Aug 6, 2014 7:38 PM in response to Loner T
    Level 1 (0 points)
    Aug 6, 2014 7:38 PM in response to Loner T

    Hi, i recently deleted the bootcamp partion. now i can recover the free space. i am using a 2012 macbook pro with OS 10.9. this is what i have.Screen Shot 2014-08-07 at 4.23.07 AM.png

    please help.

  • by Loner T,

    Loner T Loner T Aug 6, 2014 7:46 PM in response to igoddie
    Level 7 (24,825 points)
    Safari
    Aug 6, 2014 7:46 PM in response to igoddie

    You have more than one OS on this machine. Can you post a new thread and post the output of commands (the sudo ones) as have been posted?

    Please also post the output of diskutil list on the new thread. Please note that coming-in-this-Fall OS is still in test.

    If you are using a Fusion drive, please also post diskutil cs list.

  • by igoddie,

    igoddie igoddie Aug 7, 2014 2:12 AM in response to Loner T
    Level 1 (0 points)
    Aug 7, 2014 2:12 AM in response to Loner T

    Panic, switched off my mac, now I it doesn't boot. just flashing a ?, I cant even get it to recovery using the command R. looks like bad to worse situation now. Can I use another mac with the same os10.9 to create a usb recovery and use it to fix mine? what else can I do that can serve my files, had not backed them. Heeeeeeeeeeeeelp

  • by Loner T,

    Loner T Loner T Aug 7, 2014 3:32 AM in response to igoddie
    Level 7 (24,825 points)
    Safari
    Aug 7, 2014 3:32 AM in response to igoddie

    Try Command+Opt+R (Internet Recovery).

  • by igoddie,

    igoddie igoddie Aug 7, 2014 4:13 AM in response to Loner T
    Level 1 (0 points)
    Aug 7, 2014 4:13 AM in response to Loner T

    Ok, so obviously the laptop has be wired to a network, will try it when I get home.

  • by Loner T,

    Loner T Loner T Aug 7, 2014 4:16 AM in response to igoddie
    Level 7 (24,825 points)
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    Aug 7, 2014 4:16 AM in response to igoddie

    You can install Mavericks on a 16GB USB flash drive and boot from there. Another option if you have two macs is to use Target Disk Mode.

     

    OS X Mavericks: Transfer files between two computers using target disk mode

  • by Rani9933,

    Rani9933 Rani9933 Aug 11, 2014 9:44 PM in response to Loner T
    Level 1 (0 points)
    Aug 11, 2014 9:44 PM in response to Loner T

    Hi all,

     

    After reallocating some space to my Windows partition, I realize I'm in a similar boat as many of you. However, my problem is slightly different as I cannot boot into the Mac half, and can only boot into Windows. How do I go about troubleshooting this from the Windows side? I'm only vaguely familiar with batch commands, so please be patient with me Thank you.

     

    EDIT: I'm running Windows 7 on a mid-2012 Macbook pro and was running Mavericks on the other half before this fiasco started.

  • by Loner T,

    Loner T Loner T Aug 12, 2014 2:23 AM in response to Rani9933
    Level 7 (24,825 points)
    Safari
    Aug 12, 2014 2:23 AM in response to Rani9933

    If you have come this far, please post a new thread, with the output of

     

    1. diskutil  list

    2. sudo gpt -vv -r show /dev/diskX, where X corresponds to each disk from 0 and n

     

    These will have to be executed in a Mac OS X Terminal, which can be started using Applications -> Utilities -> Terminal. #2 will ask you for your administrative password. Typically, OS X software installers ask for the same password.

  • by randalltrini,

    randalltrini randalltrini Aug 27, 2014 3:39 AM in response to Loner T
    Level 1 (0 points)
    Notebooks
    Aug 27, 2014 3:39 AM in response to Loner T

    Hey LonerT,

     

    Sorry for taking so long I was out of the country last two weeks and unfortunately my internet connectivity was non-existent.

     

    WIndows is on the 500G in the Optibay side. The 320G had the old OSX and Windows operating systems originally, but I accidentally deleted the Windows partition on the old one, but was able to restore a copy to a new partition on the 500G one.

     

    I keep getting no response with the: "sudo dd if=/dev/disk0s4 count=1 2>/dev/null | hexdump -C". Do I need to change the disk reference for my drive? Or does it create a file output on the drive?

     

    The output for "diskutil list" is:

     

    /dev/disk0

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *500.1 GB   disk0

       1:                        EFI EFI                     209.7 MB   disk0s1

       2:                  Apple_HFS MacHD2                  320.2 GB   disk0s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

       4:       Microsoft Basic Data                         165.8 GB   disk0s4

    /dev/disk1

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *320.1 GB   disk1

       1:                        EFI EFI                     209.7 MB   disk1s1

       2:                  Apple_HFS Macintosh HD            319.2 GB   disk1s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk1s3

    /dev/disk2

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:     FDisk_partition_scheme                        *128.7 GB   disk2

       1:               Windows_NTFS StorEDGE                128.7 GB   disk2s1

    /dev/disk3

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *153.6 MB   disk3

       1:                  Apple_HFS Leap Motion             153.6 MB   disk3s1

     

    Should I go ahead and try the actions in step 5?

     

    RD

  • by randalltrini,

    randalltrini randalltrini Aug 27, 2014 4:17 AM in response to randalltrini
    Level 1 (0 points)
    Notebooks
    Aug 27, 2014 4:17 AM in response to randalltrini

    Update: I decided to try the first step in 5, and got: "fdisk: could not open MBR file /usr/standalone/i386/boot0: No such file or directory"

     

    Any ideas here?

     

    RD

  • by Loner T,

    Loner T Loner T Aug 27, 2014 4:33 AM in response to randalltrini
    Level 7 (24,825 points)
    Safari
    Aug 27, 2014 4:33 AM in response to randalltrini

    If you update the MBR, it will mark it bootable, but the underlying OS issue still may need a Windows Recovery/Startup Repair.

     

    The command just dumps the file header information to see if there are any signs of NTFS corruption. Use this command (the raw disk rather than the block disk needs to be used).

     

    "sudo dd if=/dev/disk0s4 count=1 2>/dev/null | hexdump -C"

     

    should be

     

    "sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null | hexdump -C"

  • by randalltrini,

    randalltrini randalltrini Aug 27, 2014 7:55 AM in response to Loner T
    Level 1 (0 points)
    Notebooks
    Aug 27, 2014 7:55 AM in response to Loner T

    Loner T,

     

    Got this from Sudo cmd:

     

    00000000  eb 52 90 4e 54 46 53 20  20 20 20 00 02 08 00 00  |.R.NTFS    .....|

    00000010  00 00 00 00 00 f8 00 00  3f 00 ff 00 80 f8 61 25  |........?.....a%|

    00000020  00 00 00 00 80 00 80 00  f7 0f 4e 13 00 00 00 00  |..........N.....|

    00000030  00 00 0c 00 00 00 00 00  ff ff 73 00 00 00 00 00  |..........s.....|

    00000040  f6 00 00 00 01 00 00 00  30 18 37 6a 15 a3 cf 01  |........0.7j....|

    00000050  00 00 00 00 fa 33 c0 8e  d0 bc 00 7c fb 68 c0 07  |.....3.....|.h..|

    00000060  1f 1e 68 66 00 cb 88 16  0e 00 66 81 3e 03 00 4e  |..hf......f.>..N|

    00000070  54 46 53 75 15 b4 41 bb  aa 55 cd 13 72 0c 81 fb  |TFSu..A..U..r...|

    00000080  55 aa 75 06 f7 c1 01 00  75 03 e9 dd 00 1e 83 ec  |U.u.....u.......|

    00000090  18 68 1a 00 b4 48 8a 16  0e 00 8b f4 16 1f cd 13  |.h...H..........|

    000000a0  9f 83 c4 18 9e 58 1f 72  e1 3b 06 0b 00 75 db a3  |.....X.r.;...u..|

    000000b0  0f 00 c1 2e 0f 00 04 1e  5a 33 db b9 00 20 2b c8  |........Z3... +.|

    000000c0  66 ff 06 11 00 03 16 0f  00 8e c2 ff 06 16 00 e8  |f...............|

    000000d0  4b 00 2b c8 77 ef b8 00  bb cd 1a 66 23 c0 75 2d  |K.+.w......f#.u-|

    000000e0  66 81 fb 54 43 50 41 75  24 81 f9 02 01 72 1e 16  |f..TCPAu$....r..|

    000000f0  68 07 bb 16 68 70 0e 16  68 09 00 66 53 66 53 66  |h...hp..h..fSfSf|

    00000100  55 16 16 16 68 b8 01 66  61 0e 07 cd 1a 33 c0 bf  |U...h..fa....3..|

    00000110  28 10 b9 d8 0f fc f3 aa  e9 5f 01 90 90 66 60 1e  |(........_...f`.|

    00000120  06 66 a1 11 00 66 03 06  1c 00 1e 66 68 00 00 00  |.f...f.....fh...|

    00000130  00 66 50 06 53 68 01 00  68 10 00 b4 42 8a 16 0e  |.fP.Sh..h...B...|

    00000140  00 16 1f 8b f4 cd 13 66  59 5b 5a 66 59 66 59 1f  |.......fY[ZfYfY.|

    00000150  0f 82 16 00 66 ff 06 11  00 03 16 0f 00 8e c2 ff  |....f...........|

    00000160  0e 16 00 75 bc 07 1f 66  61 c3 a0 f8 01 e8 09 00  |...u...fa.......|

    00000170  a0 fb 01 e8 03 00 f4 eb  fd b4 01 8b f0 ac 3c 00  |..............<.|

    00000180  74 09 b4 0e bb 07 00 cd  10 eb f2 c3 0d 0a 41 20  |t.............A |

    00000190  64 69 73 6b 20 72 65 61  64 20 65 72 72 6f 72 20  |disk read error |

    000001a0  6f 63 63 75 72 72 65 64  00 0d 0a 42 4f 4f 54 4d  |occurred...BOOTM|

    000001b0  47 52 20 69 73 20 6d 69  73 73 69 6e 67 00 0d 0a  |GR is missing...|

    000001c0  42 4f 4f 54 4d 47 52 20  69 73 20 63 6f 6d 70 72  |BOOTMGR is compr|

    000001d0  65 73 73 65 64 00 0d 0a  50 72 65 73 73 20 43 74  |essed...Press Ct|

    000001e0  72 6c 2b 41 6c 74 2b 44  65 6c 20 74 6f 20 72 65  |rl+Alt+Del to re|

    000001f0  73 74 61 72 74 0d 0a 00  8c a9 be d6 00 00 55 aa  |start.........U.|

    00000200

     

    Am I to judge that the BootMgr is missing (as per the text on the side). If so can it be recreated?

     

    RD

  • by Loner T,

    Loner T Loner T Aug 27, 2014 8:16 AM in response to randalltrini
    Level 7 (24,825 points)
    Safari
    Aug 27, 2014 8:16 AM in response to randalltrini

    Your NTFS system seems to be intact. This is good.

     

    You can do step 5, which will make OSX be able to bring up the Windows side, but it will not boot.

     

    At this point a Windows Recovery is required to fix the MBR and load a corrupted Boot Manager, if necessary.

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