arant
Level 1 (0 points)

Q: Bootcamp, windows 7 not booting

HELP? plz

 

I can't get into my Win7 by booting my mac with option key pressed (Only Yosemite and Recovery 10.10.3 are available)

if I go into System Preferences>Startup Disk and restart onto BOOTCAMP(windows 7) it boots to a black screen stating something like: "NO BOOTABLE DRIVE"

 

 

Below is the output of Loner T's terminal troubleshooting

diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

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

 

/dev/disk0

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *500.1 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:                  Apple_HFS Arantes' Mac HD         400.0 GB   disk0s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

   4:       Microsoft Basic Data BOOTCAMP                99.2 GB    disk0s4

 

 

No CoreStorage logical volume groups found

 

 

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 -  976773167] <Unknown ID>

2: 00    0   0   0 -    0   0   0 [         0 -          0] unused     

3: 00    0   0   0 -    0   0   0 [         0 -          0] unused     

4: 00    0   0   0 -    0   0   0 [         0 -          0] unused     

 

 

 

 

      start       size  index  contents

          0          1         PMBR

          1          1         Pri GPT header

          2         32         Pri GPT table

         34          6        

         40     409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

     409640  781249984      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

  781659624    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

  782929160        760        

  782929920  193843200      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

  976773120         15        

  976773135         32         Sec GPT table

  976773167          1         Sec GPT header

 

 

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

 

 

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 00 90 aa 2e  |........?.......|

00000020  00 00 00 00 80 00 80 00  ff cf 8d 0b 00 00 00 00  |................|

00000030  00 00 0c 00 00 00 00 00  02 00 00 00 00 00 00 00  |................|

00000040  f6 00 00 00 01 00 00 00  15 d7 6a 10 f8 6a 10 5e  |..........j..j.^|

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

MacBook Pro, OS X Yosemite (10.10.3)

Posted on Jun 10, 2015 2:03 PM

by Loner T,Solvedanswer
Loner T Loner T
Level 7 (24,202 points)
Safari
A:

No worries. The steps to rebuild MBR to match the new GPT information thus resetting the Hybrid MBR are as follows.


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 after the steps. The commands are single character commands (and the text in parentheses is an explanation and/or guide on the command). In step 6 you need to type the list of numbers separated by a space.


  1. Sudo gdisk /dev/disk0
  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.

Posted on Jun 10, 2015 8:07 PM

Close
arant

Q: Bootcamp, windows 7 not booting

  • All replies
  • Helpful answers

  • by Loner T,

    Loner T Loner T Jun 10, 2015 2:36 PM in response to arant
    Level 7 (24,202 points)
    Safari
    Jun 10, 2015 2:36 PM in response to arant

    You seem to have a missing MBR. Please download GPT Fdisk - http://sourceforge.net/projects/gptfdisk/ and install it. Please post back when you are ready.

  • by arant,

    arant arant Jun 10, 2015 7:54 PM in response to Loner T
    Level 1 (0 points)
    Jun 10, 2015 7:54 PM in response to Loner T

    done

     

    PS: Sorry for pestering you at the other thread, I'm new to this Apple Support Forum and was non the wiser that you had replied already.

  • by Loner T,Solvedanswer

    Loner T Loner T Jun 10, 2015 8:07 PM in response to arant
    Level 7 (24,202 points)
    Safari
    Jun 10, 2015 8:07 PM in response to arant

    No worries. The steps to rebuild MBR to match the new GPT information thus resetting the Hybrid MBR are as follows.


    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 after the steps. The commands are single character commands (and the text in parentheses is an explanation and/or guide on the command). In step 6 you need to type the list of numbers separated by a space.


    1. Sudo gdisk /dev/disk0
    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 arant,

    arant arant Jun 10, 2015 8:36 PM in response to Loner T
    Level 1 (0 points)
    Jun 10, 2015 8:36 PM in response to Loner T

    Just realised how lame I was... I haven't been to step 12! It wasn't written. Ctr+C and redo steps

     

    Rebooting... I'll post back as soon as it's done.

     

    Thanks a lot!

     

    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 07):

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

     

    Recovery/transformation command (? for help): o

     

    Disk size is 976773168 sectors (465.8 GiB)

    MBR disk identifier: 0x00003C50

    MBR partitions:

     

    Number  Boot  Start Sector   End Sector   Status      Code

       1                     1       409639   primary     0xEE

       2                409640    781659623   primary     0xAF

       3             781659624    782929159   primary     0xAB

       4      *      782929920    976773119   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/disk0.

    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 arant,

    arant arant Jun 10, 2015 8:56 PM in response to Loner T
    Level 1 (0 points)
    Jun 10, 2015 8:56 PM in response to Loner T

    Thanks a lot!

    I was greeted by dread win update, but it boots both win 7 & Yosemite.

     

    Btw, do you happen to know if win10 (Released Version, when it became available) or El Capitan (Beta test not Dev version) might screw MBR?

    just wondering...

     

    PS: disregard my last post, I kind took a wrong turn but realised I could backtrack.

  • by Loner T,

    Loner T Loner T Jun 10, 2015 9:01 PM in response to arant
    Level 7 (24,202 points)
    Safari
    Jun 10, 2015 9:01 PM in response to arant

    I will add the note that a control-c or q before the w will let you start over. The MBR steps can be repeated as many times as necessary, as the MBR is derived from the GPT and the GPT is not changing during these steps.

     

    W10 should not mess with the MBR anymore, but I would highly recommend backups of both OSes before you upgrade either.

     

    I am not allowed to discuss upcoming OS X versions.

  • by David Delgado,

    David Delgado David Delgado Jun 10, 2015 10:11 PM in response to Loner T
    Level 1 (0 points)
    Jun 10, 2015 10:11 PM in response to Loner T

    I had the same issue as the thread creator.  When i followed ur steps 'Windows' appeared when i booted up my mac holding option, but when i launched it it said "Missing operating system".  How do I fix this.

     

    Also none of the tests showed anything

  • by Loner T,

    Loner T Loner T Jun 11, 2015 4:27 AM in response to David Delgado
    Level 7 (24,202 points)
    Safari
    Jun 11, 2015 4:27 AM in response to David Delgado

    David Delgado wrote:

     

    I had the same issue as the thread creator. 

    Can you post the output of the following commands in a new discussion to avoid confusion for others?

     

    diskutil cs list

    sudo gpt -vv -r show /dev/disk0

    sudo fdisk /dev/disk0

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

  • by bjn1001,

    bjn1001 bjn1001 Aug 8, 2015 5:01 AM in response to Loner T
    Level 1 (0 points)
    Aug 8, 2015 5:01 AM in response to Loner T

    Hi LonerT:  I started a new thread here, where I have cobbled together as much of the information you suggest as I can.  Can you help me with next steps?  Thank you!

    Bootcamp Partition Lost After Yosemite Upgrade