smokeysailor
Level 1 (0 points)

Q: Boot Camp disappeared after El Capitan update

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 after 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/disk0 got

gpt show: disk0: mediasize=250059350016; sectorsize=512; blocks=488397168

gpt show: disk0: Suspicious MBR at sector 0

gpt show: disk0: Pri GPT at sector 1

gpt show: disk0: Sec GPT at sector 488397167

      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  301020320      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

  301429960    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

  302699496   38824984        

  341524480  146872320      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

  488396800        335        

  488397135         32         Sec GPT table

  488397167          1         Sec GPT header

 

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 gave me:

 

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

 

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 neither in .

 

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

 

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

 

Thanks in advance.

Posted on Oct 5, 2015 8:11 PM

by Loner T,Solvedanswer
Loner T Loner T
Level 7 (23,898 points)
Safari
A:

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. 302700544 ( - Start offset in sectors or the start point for Bootcamp part)
  8. +185696249 ( - 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.

Posted on Oct 7, 2015 2:52 PM

Close
smokeysailor

Q: Boot Camp disappeared after El Capitan update

  • All replies
  • Helpful answers

first Previous Page 4 of 4

  • by Loner T,

    Loner T Loner T Oct 9, 2015 7:50 PM in response to smokeysailor
    Level 7 (23,898 points)
    Safari
    Oct 9, 2015 7:50 PM in response to smokeysailor

    DVD-RW will create problems. Can you find a DVD-R (SL or DL based on the size) and burn from the -RW to -R directly? You will need to swap DVDs to that.

  • by smokeysailor,

    smokeysailor smokeysailor Oct 9, 2015 7:59 PM in response to Loner T
    Level 1 (0 points)
    Oct 9, 2015 7:59 PM in response to Loner T

    Yeah, hopefully the nearby Walmart has one. Although, they'll be selling the cheap Memorex ones. My sailing has probably been postponed to Wednesday, but not sure. What would be the procedure to do a disk copy, incase I sail out and won't have access to internet? Also, once I copy, do I do the earlier process that you suggested of rebooting from Startup, etc?

  • by Loner T,

    Loner T Loner T Oct 9, 2015 8:39 PM in response to smokeysailor
    Level 7 (23,898 points)
    Safari
    Oct 9, 2015 8:39 PM in response to smokeysailor

    The Memorex DVDs are fairly good. In my experience, Verbatim are the most reliable. Please see Disk Utility 12.x: Duplicate a disk, CD, or DVD . Use the earlier steps, which are much more reliable, but the fallback of using Alt/Option can also be used.

  • by WEE ER,

    WEE ER WEE ER Dec 6, 2015 10:37 PM in response to Loner T
    Level 1 (0 points)
    Dec 6, 2015 10:37 PM in response to Loner T

    Hi loner

    i lose my windows partition after i upgrading to El Capitan.This is the information i can give. i not sure that whether i can follow the step on top.

    Last login: Mon Dec  7 13:33:44 on ttys000

    DME-MB1455700:~ ertarwee$ diskutil list

    /dev/disk0 (internal, physical):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *500.1 GB   disk0

       1:                        EFI EFI                     209.7 MB   disk0s1

       2:          Apple_CoreStorage Macintosh HD            320.4 GB   disk0s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

       4:       Microsoft Basic Data                         80.0 GB    disk0s4

    /dev/disk1 (internal, virtual):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:                  Apple_HFS Macintosh HD           +320.0 GB   disk1

                                     Logical Volume on disk0s2

                                     8E69B371-667C-4F08-8A5A-792FD82F4C26

                                     Unlocked Encrypted

    DME-MB1455700:~ ertarwee$ diskutil cs list

    CoreStorage logical volume groups (1 found)

    |

    +-- Logical Volume Group 5E40D0AB-1F00-4327-8F5C-A499053E7F1A

        =========================================================

        Name:         Macintosh HD

        Status:       Online

        Size:         320377606144 B (320.4 GB)

        Free Space:   18894848 B (18.9 MB)

        |

        +-< Physical Volume B334FFE9-B4A9-42B1-A6B4-E190A79040B9

        |   ----------------------------------------------------

        |   Index:    0

        |   Disk:     disk0s2

        |   Status:   Online

        |   Size:     320377606144 B (320.4 GB)

        |

        +-> Logical Volume Family 3EB48281-B3C4-4E3C-B94A-34DC5293534D

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

            Encryption Type:         AES-XTS

            Encryption Status:       Unlocked

            Conversion Status:       Converting (forward)

            High Level Queries:      Not Fully Secure

            |                        Passphrase Required

            |                        Accepts New Users

            |                        Has Visible Users

            |                        Has Volume Key

            |

            +-> Logical Volume 8E69B371-667C-4F08-8A5A-792FD82F4C26

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

                Disk:                  disk1

                Status:                Online

                Size (Total):          320006389760 B (320.0 GB)

                Conversion Progress:   65%

                Revertible:            Yes (unlock and decryption required)

                LV Name:               Macintosh HD

                Volume Name:           Macintosh HD

                Content Hint:          Apple_HFS

    DME-MB1455700:~ ertarwee$  sudo gpt -vv -r show/dev/disk0

    Password:

    gpt: unknown command: show/dev/disk0

    DME-MB1455700:~ ertarwee$  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  625737512      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

      626147152    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      627416688  193108368        

      820525056  156248064      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

      976773120         15        

      976773135         32         Sec GPT table

      976773167          1         Sec GPT header

    DME-MB1455700:~ ertarwee$  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 1023 254  63 - 1023 254  63 [         1 -     409639] <Unknown ID>

    2: AC 1023 254  63 - 1023 254  63 [    409640 -  625737512] <Unknown ID>

    3: AB 1023 254  63 - 1023 254  63 [ 626147152 -    1269536] Darwin Boot

    4: 0C 1023 254  63 - 1023 254  63 [ 820525056 -  156248064] Win95 FAT32L

    DME-MB1455700:~ ertarwee$

  • by Loner T,

    Loner T Loner T Dec 7, 2015 5:13 AM in response to WEE ER
    Level 7 (23,898 points)
    Safari
    Dec 7, 2015 5:13 AM in response to WEE ER

    Can you start a new discussion (Find answers and ask new questions) and post the same output on the new discussion? It avoids confusion on steps which may be unique to you.

     

    Can you use El Capitan has deleted my bootcamp windows partition as a reference and download Testdisk and GPT Fdisk and start a Testdisk scan and run a Quick Search?

  • by sirenita55,

    sirenita55 sirenita55 Dec 23, 2015 6:14 AM in response to Loner T
    Level 1 (0 points)
    Dec 23, 2015 6:14 AM in response to Loner T

    I'm not computer savy and cannot follow these instructions to fix this issue. Can i use time machine to go back to my last back up before i installed el capitan? Will that fix the issue?

  • by Loner T,

    Loner T Loner T Dec 23, 2015 7:04 AM in response to sirenita55
    Level 7 (23,898 points)
    Safari
    Dec 23, 2015 7:04 AM in response to sirenita55

    Can I suggest starting a new discussion and posting details? This may require a bit of Terminal work, but let that not daunt/deter you from trying it. I can provide specific commands, etc.

  • by WojtasWWW,

    WojtasWWW WojtasWWW Mar 31, 2016 8:37 AM in response to Loner T
    Level 1 (4 points)
    Mar 31, 2016 8:37 AM in response to Loner T

    Hi,

     

    I have similar, but not the same situation. Bootcamp partition dissapeared after El Captain upgrade (and is NOT visible from StartUp Disk utility) but is visible in boot menu (when you start a computer with Alt key). I can start Windows from this place but after each shutdown (in Windows) it reboots into OSX (unless I press Alt as mentioned)

     

    What procedure should I use in this situation?

     

    Additional question - does your solution delete data on "broken" bootcamp partition?

     

    Wojtek

  • by Loner T,

    Loner T Loner T Mar 31, 2016 11:33 AM in response to WojtasWWW
    Level 7 (23,898 points)
    Safari
    Mar 31, 2016 11:33 AM in response to WojtasWWW

    Please start a new discussion and post the output of commands as requested in this discussion. None of the steps delete any user data, they only manipulate partitions and related MBRs.

  • by Techy007,

    Techy007 Techy007 Aug 28, 2016 9:06 PM in response to smokeysailor
    Level 1 (4 points)
    Aug 28, 2016 9:06 PM in response to smokeysailor

    Hi all,

     

    @ Loner T or @smokeysailor - I have this very problem which since has been 'solved'. What I would like to know is will doing the above solution keep the existing partition data/information?

     

    I had bootcamp running perfectly on Yosemite and needed to update to El Capitan due to Sketch software requirements. I did do an initial search and for all I could find upgrading to El Capitan on the OSX partition should have been fine however I discovered it was not.

     

    I am very much hoping the above solution simply fixes the MBR table and does not wipe any of the data on my windows partition which I so badly need.

     

    Please advise. Thanks!

  • by Loner T,

    Loner T Loner T Aug 29, 2016 3:48 AM in response to Techy007
    Level 7 (23,898 points)
    Safari
    Aug 29, 2016 3:48 AM in response to Techy007

    Techy007 wrote:

     

    I am very much hoping the above solution simply fixes the MBR table and does not wipe any of the data on my windows partition which I so badly need.

     

    Data is not touched. Only the partition tables - GPT and MBR - are manipulated.

first Previous Page 4 of 4