fhornedo
Level 1 (0 points)

Q: Yosemite Upgrade Broke Bootcamp

Upgraded to Yosemite and now when I ALT Boot Windows 7 and Recovery partitions no longer show up. Using information from other threads I managed to get my Windows 7 partition to show up but when I select it I receive an ERROR READING DISK message. Is there any way to get this fixed?

 

diskutil list


/dev/disk0

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *750.2 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:          Apple_CoreStorage                         647.3 GB   disk0s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

   4:       Microsoft Basic Data                         61.0 GB    disk0s4

/dev/disk1

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:                  Apple_HFS Mac HD                 *647.0 GB   disk1

                                 Logical Volume on disk0s2

                                 EE76C469-0C14-4592-986A-81FA25FAAF17

                                 Unencrypted


diskutil cs list


CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 02310D8F-058E-4CCF-8B7F-DAAED96FD1EF

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

    Name:         Mac HD

    Status:       Online

    Size:         647348539392 B (647.3 GB)

    Free Space:   18927616 B (18.9 MB)

    |

    +-< Physical Volume 0ABB2748-5135-4046-ACBB-5768C422F26B

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

    |   Index:    0

    |   Disk:     disk0s2

    |   Status:   Online

    |   Size:     647348539392 B (647.3 GB)

    |

    +-> Logical Volume Family 067A450C-844D-4465-8F8B-3DF65E5E2FF9

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

        Encryption Status:       Unlocked

        Encryption Type:         None

        Conversion Status:       NoConversion

        Conversion Direction:    -none-

        Has Encrypted Extents:   No

        Fully Secure:            No

        Passphrase Required:     No

        |

        +-> Logical Volume EE76C469-0C14-4592-986A-81FA25FAAF17

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

            Disk:                  disk1

            Status:                Online

            Size (Total):          646977290240 B (647.0 GB)

            Conversion Progress:   -none-

            Revertible:            Yes (no decryption required)

            LV Name:               Mac HD

            Volume Name:           Mac HD

            Content Hint:          Apple_HFS


sudo gpt -vv -r show /dev/disk0


gpt show: /dev/disk0: mediasize=750156374016; sectorsize=512; blocks=1465149168

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 1465149167

       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  1264352616      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

  1264762256     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

  1266031792    79977296        

  1346009088   119138304      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

  1465147392        1743        

  1465149135          32         Sec GPT table

  1465149167           1         Sec GPT header


sudo fdisk /dev/disk0


Disk: /dev/disk0 geometry: 91201/255/63 [1465149168 sectors]

Signature: 0xAA55

         Starting       Ending

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

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

1: EE    0   0   2 -   25 127  14 [         1 -     409639] <Unknown ID>

2: AF   25 127  15 - 1023 254  63 [    409640 - 1264352616] HFS+       

3: AB 1023 254  63 - 1023 254  63 [1264762256 -    1269536] Darwin Boot

*4: 0C 1023 254  63 - 1023 254  63 [1346009088 -  119138304] Win95 FAT32L

Macbook Pro, Mac OS X (10.5.5)

Posted on Oct 22, 2014 5:54 PM

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

Take a look at the following example. You need to use your own start/end rather than what is here...

 

Post back when you are ready for Step 5.

 

"Please stop if you see any error messages.

 

1. Delete the old entry and create a new entry at GPT#4.

 

sudo gdisk /dev/disk0

p

d

4

n

4

86923264

538218489

0700

p

w

y

 

2. You will need to reboot after the change, because the disk you are booted from is the one being modified. Reboot will rebuild disk0s4 using the start/end you entered.

 

3. Run the dd command - sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null | hexdump -C and check that the first line contains "R.NTFS".

 

4. This is a tedious process and you want to check after the second 'p'rint command that it looks reasonable, before the 'w'rite and 'y'es to confirm.

 

5. Once you a working GPT#4, a new hybrid MBR needs to be created which will overwrite what you see in your Fdisk output. This is also done using GPT Fdisk (Gdisk).

 

6. a. Test 1 - Can you see your Bootcamp volume in Finder.

    b. Test 2 - Can you files in the Bootcamp volume?

    c. Test 3 - Can you see Bootcamp in your System Preferences -> Startup Disk.

    d. Test 4 - If Test 1-3 are successful, select Bootcamp and click on Restart. You may need Windows startup repair, if you see a hanging underline cursor at the top left corner of your screen. In most cases, it is not required.

 

 

Here is an example...

 

Command (? for help): d

Partition number (1-4): 4

 

Command (? for help): n

Partition number (4-128, default 4): 4

First sector (34-1954210086, default = 1454210080) or {+-}size{KMGTP}: 1454211072

Last sector (1454211072-1954210086, default = 1954210086) or {+-}size{KMGTP}: 1954209791

Current type is 'Apple HFS/HFS+'

Hex code or GUID (L to show codes, Enter = AF00): 0700

Changed type of partition to 'Microsoft basic data'

 

Command (? for help): p

Disk /dev/disk0: 1954210120 sectors, 931.8 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): 6ED0C429-00D1-4759-B50E-04B6FB80D0E3

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 1954210086

Partitions will be aligned on 8-sector boundaries

Total free space is 1293 sectors (646.5 KiB)

 

Number  Start (sector)    End (sector)  Size       Code  Name

   1              40          409639   200.0 MiB   EF00  EFI System Partition

   2          409640      1452940543   692.6 GiB   AF00  Customer

   3      1452940544      1454210079   619.9 MiB   AB00  Recovery HD

   4      1454211072      1954209791   238.4 GiB   0700  Microsoft basic data

 

"

Posted on Oct 24, 2014 3:37 AM

Close
fhornedo

Q: Yosemite Upgrade Broke Bootcamp

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  • Helpful answers

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  • by fhornedo,

    fhornedo fhornedo Oct 25, 2014 12:36 PM in response to Loner T
    Level 1 (0 points)
    Oct 25, 2014 12:36 PM in response to Loner T

    Loner T, it looks like the Recovery partition is not showing up as an option when I OPTION boot but it used to. Should I use GDISK to make the partition bootable?

  • by Loner T,

    Loner T Loner T Oct 25, 2014 12:54 PM in response to fhornedo
    Level 7 (24,202 points)
    Safari
    Oct 25, 2014 12:54 PM in response to fhornedo

    Gdisk boot ability for the MBR should have no bearing on Recovery HD. Can you post the output of sudo fdisk /dev/disk0?

  • by fhornedo,

    fhornedo fhornedo Oct 25, 2014 2:25 PM in response to Loner T
    Level 1 (0 points)
    Oct 25, 2014 2:25 PM in response to Loner T

    Disk: /dev/disk0 geometry: 91201/255/63 [1465149168 sectors]

    Signature: 0xAA55

             Starting       Ending

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

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

    1: EE    0   0   2 -   25 127  14 [         1 -     409639] <Unknown ID>

    2: AF   25 127  15 - 1023 254  63 [    409640 - 1264352616] HFS+       

    3: AB 1023 254  63 - 1023 254  63 [1264762256 -    1269536] Darwin Boot

    *4: 07 1023 254  63 - 1023 254  63 [1266032640 -  199114745] HPFS/QNX/AUX

  • by Loner T,

    Loner T Loner T Oct 25, 2014 2:30 PM in response to fhornedo
    Level 7 (24,202 points)
    Safari
    Oct 25, 2014 2:30 PM in response to fhornedo

    The #3 entry (as well as GPT#3) is your Recovery HD. If you power cycle your Mac and hold Command+R, do you get Recovery without a spinning globe?

  • by fhornedo,

    fhornedo fhornedo Oct 25, 2014 3:15 PM in response to Loner T
    Level 1 (0 points)
    Oct 25, 2014 3:15 PM in response to Loner T

    yes that does seem to work so that should be fine. I just remembered having it on my Option Boot list but as long as I can Command-R into it I should be in good shape. Again, you're the best! Thanks!

  • by Loner T,

    Loner T Loner T Oct 25, 2014 3:41 PM in response to fhornedo
    Level 7 (24,202 points)
    Safari
    Oct 25, 2014 3:41 PM in response to fhornedo

    Please test Command+Opt+R just to be certain you see a spinning global and than recovery. You may be offered a different OS than what Command+R does., so that is a good test as well.

     

    Good to see all working for you.

  • by rubby0913,

    rubby0913 rubby0913 Oct 25, 2014 10:43 PM in response to Loner T
    Level 1 (0 points)
    Oct 25, 2014 10:43 PM in response to Loner T

    Dear Loner T, Can you help me with the same problem! I have started a new thread in the following link: Missing bootcamp win7 after updating the mac to OS X Yosemite

  • by UTC7,

    UTC7 UTC7 Oct 26, 2014 9:12 AM in response to fhornedo
    Level 1 (0 points)
    Oct 26, 2014 9:12 AM in response to fhornedo

    Hi Loner,

     

    I have followed this instructions, but it didn't work for me.  I can see that you are pretty advanced and followed other posts(Repairing Boot Camp after creating new partition) from you which helped at least see the partition when pressing ATL when booting, but I am having Missing Operation system and even startup repair can't repair.  Here's my output and thanks for you help in advance, I don't know what to do and help will be appreciated. :

     

    diskutil list

    /dev/disk0

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *251.0 GB   disk0

       1:                        EFI EFI                     209.7 MB   disk0s1

       2:          Apple_CoreStorage                         200.1 GB   disk0s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

       4:       Microsoft Basic Data                         50.0 GB    disk0s4

    /dev/disk1

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:                  Apple_HFS Macintosh HD           *199.8 GB   disk1

                                     Logical Volume on disk0s2

                                     7F0AFFB1-38EC-4913-B927-68E19727B9D7

                                     Unencrypted

     

    diskutil cs list

    CoreStorage logical volume groups (1 found)

    |

    +-- Logical Volume Group DAC95FBC-7599-4F3A-AC33-9E2DF24F909D

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

        Name:         Macintosh HD

        Status:       Online

        Size:         200140746752 B (200.1 GB)

        Free Space:   18968576 B (19.0 MB)

        |

        +-< Physical Volume CBC1FDE8-D586-43FB-A0FF-DB81A9FEDCA2

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

        |   Index:    0

        |   Disk:     disk0s2

        |   Status:   Online

        |   Size:     200140746752 B (200.1 GB)

        |

        +-> Logical Volume Family 2CE19A0E-073E-49B3-9D9D-5885C04BBC8D

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

            Encryption Status:       Unlocked

            Encryption Type:         None

            Conversion Status:       NoConversion

            Conversion Direction:    -none-

            Has Encrypted Extents:   No

            Fully Secure:            No

            Passphrase Required:     No

            |

            +-> Logical Volume 7F0AFFB1-38EC-4913-B927-68E19727B9D7

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

                Disk:                  disk1

                Status:                Online

                Size (Total):          199769456640 B (199.8 GB)

                Conversion Progress:   -none-

                Revertible:            Yes (no decryption required)

                LV Name:               Macintosh HD

                Volume Name:           Macintosh HD

                Content Hint:          Apple_HFS

     

    sudo gpt -vv -r show /dev/disk0

    Password:

    gpt show: /dev/disk0: mediasize=251000193024; sectorsize=512; blocks=490234752

    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 490234751

          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  390899896      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

      391309536    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      392579072   97654784      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

      490233856        863        

      490234719         32         Sec GPT table

      490234751          1         Sec GPT header

     

    sudo fdisk /dev/disk0

    Disk: /dev/disk0 geometry: 30515/255/63 [490234752 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 -  390899896] <Unknown ID>

    3: AB 1023 254  63 - 1023 254  63 [ 391309536 -    1269536] Darwin Boot

    *4: 07 1023 254  63 - 1023 254  63 [ 392579072 -   97654784] HPFS/QNX/AUX

     

     

    Hope this help

  • by Loner T,

    Loner T Loner T Oct 26, 2014 9:28 AM in response to UTC7
    Level 7 (24,202 points)
    Safari
    Oct 26, 2014 9:28 AM in response to UTC7

    Do you get an error when executing Startup Repair? Please see this thread for BCD repair - Windows error loading after Yosemite upgrade.

  • by UTC7,

    UTC7 UTC7 Oct 26, 2014 2:49 PM in response to Loner T
    Level 1 (0 points)
    Oct 26, 2014 2:49 PM in response to Loner T

    Yes I do get an error.  It says that Windows can't repair this Windows installation...

     

    Thanks!

  • by sophiekdb,

    sophiekdb sophiekdb Oct 26, 2014 4:20 PM in response to fhornedo
    Level 1 (0 points)
    Oct 26, 2014 4:20 PM in response to fhornedo

    Loner T, I'm following your instructions and I can't figure out how to calculate the Start and End for the GPT part. I've posted my fdisk and my TestDisk screenshots.

     

    Screen Shot 2014-10-26 at 7.17.22 PM.png

     

    Screen Shot 2014-10-26 at 7.18.41 PM.png

    Screen Shot 2014-10-26 at 7.19.23 PM.png

    Screen Shot 2014-10-26 at 7.19.48 PM.png

  • by sophiekdb,

    sophiekdb sophiekdb Oct 26, 2014 4:38 PM in response to Loner T
    Level 1 (0 points)
    Oct 26, 2014 4:38 PM in response to Loner T

    Loner T, after following your instructions, and running gdisk, I see  GPT#4 showing up in gdisk but not in fdisk ...

     

    Screen Shot 2014-10-26 at 7.38.13 PM.png

  • by sophiekdb,

    sophiekdb sophiekdb Oct 26, 2014 5:05 PM in response to Loner T
    Level 1 (0 points)
    Oct 26, 2014 5:05 PM in response to Loner T

    WOW!!!! IT WORKED!!

     

    My error was I was not using the START ---- END from where I found the file listing in TestDisk, i was just using where it labeled "Bootcamp"

     

    I was able to Boot to Windows and everything is showing up again!! LONER T YOU ARE FABULOUS!!!!

  • by Loner T,

    Loner T Loner T Oct 26, 2014 5:06 PM in response to UTC7
    Level 7 (24,202 points)
    Safari
    Oct 26, 2014 5:06 PM in response to UTC7

    A screen shot would be good to see, if you can use a camera and post it.

  • by Loner T,

    Loner T Loner T Oct 26, 2014 5:18 PM in response to sophiekdb
    Level 7 (24,202 points)
    Safari
    Oct 26, 2014 5:18 PM in response to sophiekdb

    Your NTFS start is 587618304, end is 976773112 and size is 389154809.

     

    What you see in the Fdisk output entry #4 is bogus. In this thread There is a set of steps to delete the current bogus GPT#4 and recreate it using the start/end as I posted.

     

    After GPT#4 is corrected and Mac rebooted, you need to recreate the hybrid MBR using Gdisk, the steps are also in this thread. Once you have matching GPT#4 and MBR#4, the GPT/MBR entries are already aligned.

     

    You should run the dd command to ensure that GPT#4/MBR#4 shows NTFS header. Once validated, run the Test 1,2,3, and 4 should bring Windows up provided it does not need any startup repair.

     

    PS: Excellent.

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