bjn1001

Q: Bootcamp Partition Lost After Yosemite Upgrade

Like many others, I upgraded to Yosemite and have now lost access to Bootcamp and my Windows partition (which has been replaced with a greyed out disk0s4).  It seems LonerT has brilliantly found a solution for this, but I am struggling to follow the sequence of steps delineated in various threads on this topic. I have/had a lot of mission critical data on my Windows partition, so am worried about accidentally making the situation worse.

 

Here is the information I cobbled together so far:

 

diskutil list

/dev/disk0

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *500.3 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:          Apple_CoreStorage                         350.2 GB   disk0s2

   3:                 Apple_Boot Recovery HD             650.1 MB   disk0s3

   4:       Microsoft Basic Data                         90.0 GB    disk0s4

/dev/disk1

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:                  Apple_HFS Macintosh HD           *349.8 GB   disk1

                                 Logical Volume on disk0s2

                                 85806C0D-965A-4E1F-B73B-54084FBB7FDF

                                 Unlocked Encrypted

 

diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 9F66D719-DEBC-482D-9725-A2D0EFC1B49D

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

    Name:         Macintosh HD

    Status:       Online

    Size:         350191783936 B (350.2 GB)

    Free Space:   954368 B (954.4 KB)

    |

    +-< Physical Volume 35A6BD2F-48F0-4A12-924D-774C86B9C09D

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

    |   Index:    0

    |   Disk:     disk0s2

    |   Status:   Online

    |   Size:     350191783936 B (350.2 GB)

    |

    +-> Logical Volume Family F9D06192-F7A3-48CD-B25A-D5DD629EFB17

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

        Encryption Status:       Unlocked

        Encryption Type:         AES-XTS

        Conversion Status:       Complete

        Conversion Direction:    -none-

        Has Encrypted Extents:   Yes

        Fully Secure:            Yes

        Passphrase Required:     Yes

        |

        +-> Logical Volume 85806C0D-965A-4E1F-B73B-54084FBB7FDF

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

            Disk:                  disk1

            Status:                Online

            Size (Total):          349838393344 B (349.8 GB)

            Conversion Progress:   -none-

            Revertible:            Yes (unlock and 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=500277790720; sectorsize=512; blocks=977105060

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 977105059

      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  683968328      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

  684377968    1269760      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

  685647728  115677328       

  801325056  175779840      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

  977104896        131       

  977105027         32         Sec GPT table

  977105059          1         Sec GPT header

 

sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 60821/255/63 [977105060 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 -  683968328] <Unknown ID>

3: AB 1023 254  63 - 1023 254  63 [ 684377968 -    1269760] Darwin Boot

4: 0C 1023 254  63 - 1023 254  63 [ 801325056 -  175779840] Win95 FAT32L

 

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

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 40 c3 2f  |........?....@./|

00000020  00 00 00 00 80 00 80 00  ff 2f 7a 0a 00 00 00 00  |........./z.....|

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  9f b7 f0 7c ec f0 7c 26  |...........|..|&|

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

 

TestDisk 7.0, Data Recovery Utility, April 2015

Christophe GRENIER <grenier@cgsecurity.org>

http://www.cgsecurity.org

 

  TestDisk is free software, and

comes with ABSOLUTELY NO WARRANTY.

 

Select a media (use Arrow keys, then press Enter):

>Disk /dev/disk0 - 500 GB / 465 GiB (RO)

Disk /dev/rdisk0 - 500 GB / 465 GiB (RO)

Disk /dev/rdisk1 - 349 GB / 325 GiB

 

 

TestDisk 7.0, Data Recovery Utility, April 2015

Christophe GRENIER <grenier@cgsecurity.org>

http://www.cgsecurity.org

 

 

Disk /dev/rdisk1 - 349 GB / 325 GiB

 

Please select the partition table type, press Enter when done.

[Intel  ] Intel/PC partition

[EFI GPT] EFI GPT partition map (Mac i386, some x86_64...)

[Humax  ] Humax partition table

[Mac    ] Apple partition map

>[None   ] Non partitioned media

[Sun    ] Sun Solaris partition

[XBox   ] XBox partition

[Return ] Return to disk selection

 

 

 

Hint: None partition table type has been detected.

Note: Do NOT select 'None' for media with only a single partition. It's very

rare for a disk to be 'Non-partitioned'.

 

TestDisk 7.0, Data Recovery Utility, April 2015

Christophe GRENIER <grenier@cgsecurity.org>

http://www.cgsecurity.org

 

Disk /dev/disk0 - 500 GB / 465 GiB - 977105060 sectors (RO)

Current partition structure:

     Partition                  Start        End    Size in sectors

 

1 P EFI System                    40     409639     409600 [EFI System Partitio

2 P Unknown                   409640  684377967  683968328 [Macintosh HD]

3 P Mac Boot               684377968  685647727    1269760 [Recovery HD]

Warning: number of heads/cylinder mismatches 255 (NTFS) != 1 (HD)

Warning: number of sectors per track mismatches 63 (NTFS) != 1 (HD)

4 P MS Data                801325056  977104895  175779840 [BOOTCAMP]

 

 

 

So two questions:  Which of these media should I select and what is the correct partition type?  Where do I find the start offset and size offset values you reference here:

 

Rebuild using start/end offsets from Testdisk DeepSearch using GPT Fdisk (http://sourceforge.net/projects/gptfdisk/)

  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. 49741824 - Start offset in bytes  (start point for Bootcamp part)
  8. +187234297 (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.



Thank you!!

 

Message was edited by: bjn1001

MacBook Pro (Retina, 15-inch, Late 2013), OS X Yosemite (10.10.3), null

Posted on Aug 8, 2015 5:11 AM

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