Mugen8

Q: Bootcamp won't mount or boot.

I'm running Mavericks 10.9.5 on a late 2011 Macbook Pro. My bootcamp partition has been unable to mount or boot and I'm not sure how to repair it.

 

diskutil list

 

/dev/disk0

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *500.1 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:                  Apple_HFS Deathbook               335.2 GB   disk0s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

   4:       Microsoft Basic Data Windeath                161.1 GB   disk0s4

 

When I type diskutil cs list into terminal I get No CoreStorage logical volume groups found.

 

sudo gpt -vv -r show /dev/disk0


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

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 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  654631968      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

  655041608    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

  656311144    5831832        

  662142976  314630144      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

  976773120         15        

  976773135         32         Sec GPT table

  976773167          1         Sec GPT header

 

sudo fdisk /dev/disk0

 

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

Signature: 0xAA55

         Starting       Ending

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

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

1: EE    0   0   2 - 1023 254  63 [         1 -  662142975] <Unknown ID>

*2: 07 1023 254  63 - 1023 254  63 [ 662142976 -  314630144] HPFS/QNX/AUX

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

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

Posted on Jan 31, 2015 10:42 AM

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Q: Bootcamp won't mount or boot.

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  • by Loner T,

    Loner T Loner T Feb 6, 2015 2:41 PM in response to Mugen8
    Level 7 (24,795 points)
    Safari
    Feb 6, 2015 2:41 PM in response to Mugen8

    Did you choose a EFI/GPT disk in the initial Testdisk screens?

  • by smokeysailor,

    smokeysailor smokeysailor Oct 5, 2015 5:29 PM in response to Loner T
    Level 1 (0 points)
    Oct 5, 2015 5:29 PM in response to Loner T

    Hello Loner T

     

    I am having the same problem. I am a sailor and due to report to my ship & sail out this coming Saturday 10/10/2015.


    I have a mid-2009 13" silver MBP which also has win10 loaded using boot camp. The Win 10 side has all my USCG certifications, professional licenses, email exchanges with USCG, accounts, etc.


    I downloaded and installed El Capitan and when rebooting, I noticed the option of booting up in Win 10 gone. Pressing the Option key gave me 2 options of booting up either in El Capitan or the Recovery Disk. A friend put in the following sudo command, "sudo nvram boot-args="kext-dev-mode=1 rootless=0” and now the boot select screen does not show that option either.

    This is what diskutil list shows:

    /dev/disk0 (internal, physical):

         #:                              TYPE NAME                               SIZE            IDENTIFIER

         0: GUID_partition_scheme                                         *250.1 GB    disk0

         1:                                EFI EFI                                      209.7 MB   disk0s1

         2:                    Apple_HFS Xxxx Xxxxxxxxx                  154.1 GB  disk0s2

         3:                   Apple_Boot Recovery HD                      650.0 MB   disk0s3

         4:    Microsoft Basic Data                                             75.2 GB     disk0s4

     

    When I type diskutil cs list into Terminal, I get No CoreStorage logical volume groups found.

     

    Typing sudo gpt -vv -r show /dev/disk 0 got

    gpt show: unable to open device '/dev/disk': No such file or directory

     

    Typing sudo fdisk /dev/disk0 got:

     

    Disk: /dev/disk0 geometry: 30401/255/63 [488397168 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 -  301020320] HFS+      

    3: AB 1023 254  63 - 1023 254  63 [ 301429960 -    1269536] Darwin Boot

    4: 0C 1023 254  63 - 1023 254  63 [ 341524480 -  146872320] Win95 FAT32L

     

    Typing sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null / hexdump -C got me nothing.

     

    Typing diskutil info /dev/disk0s4 got me the following:

     

       Device Identifier:        disk0s4

       Device Node:              /dev/disk0s4

       Whole:                    No

       Part of Whole:            disk0

       Device / Media Name:      BOOTCAMP

     

       Volume Name:            

     

       Mounted:                  No

     

       File System Personality:  MS-DOS

       Type (Bundle):            msdos

       Name (User Visible):      MS-DOS (FAT)

     

       Partition Type:           Microsoft Basic Data

       OS Can Be Installed:      No

       Media Type:               Generic

       Protocol:                 SATA

       SMART Status:             Verified

       Disk / Partition UUID:    26E51FF2-1C10-406A-8099-D2DD8ADBC1A8

     

       Total Size:               75.2 GB (75198627840 Bytes) (exactly 146872320 512-Byte-Units)

       Volume Free Space:        0 B (0 Bytes) (exactly 0 512-Byte-Units)

       Device Block Size:        512 Bytes

     

       Read-Only Media:          No

       Read-Only Volume:         Not applicable (not mounted)

     

       Device Location:          Internal

       Removable Media:          No

     

       Solid State:              No

     

     

    Also, a few months back I had re-partitioned the hard disk with both Yosemite and Win 7 on it, to make space for Win 10.

     

    How can I undo the sudo command and get back the Win 10 partition? I can't see the Boot Camp/Win 10 partition anywhere.

     

    PLEASE HELP. I need to get access to my documents and co email before Saturday.

     

    Thanks in advance.

     

  • by Loner T,

    Loner T Loner T Oct 5, 2015 6:15 PM in response to smokeysailor
    Level 7 (24,795 points)
    Safari
    Oct 5, 2015 6:15 PM in response to smokeysailor

    Would you mind posting a new discussion with this information?

     

    Please post the following on that discussion as well. Hopefully 10/10 is too far away and we can get you up and running.

     

    1. Was W10 installed as a VM, because you have only one Bootcamp partition?

    2. You need a "|" (pipe) not a forward slash "/" in the following command.

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

    3. If the current installation has always has a single Windows installation, then your current Bootcamp is W10.

    4. The sudo commands that your friend used can be reversed. The NVRAM settings are modifiable. El Capitan has a System Integrity Protection mode.  It can also be changed in Recovery Mode.

  • by smokeysailor,

    smokeysailor smokeysailor Oct 5, 2015 8:21 PM in response to Loner T
    Level 1 (0 points)
    Oct 5, 2015 8:21 PM in response to Loner T

    Hi Loner T

     

    I have created a new post and to answer your queries:

     

    1. Win 7 was loaded through Boot Camp while still in Snow Leopard (I think) and Win 10 was upgraded just the way I upgraded to El Capitan. Online.

    2. I have made a new post as you suggested with the modified command and some more info presented in that thread.

    3. I cannot see boot camp partition neither in StartUp Disk or Disk Utility.

    4. Someone has suggested that I should use the sudo bless –folder /System/Library/CoreServices –setBoot command. Should I? After that, what?

     

    I have deck watch @ 0130hrs and still have to study, but I'll be monitoring this website.

     

    Please help.

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