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User profile for user: smokeysailor
smokeysailor Author
User level: Level 1
0 points

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

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Question marked as Top-ranking reply
User profile for user: Loner T
Loner T
User level: Level 9
59,513 points

Posted on Oct 7, 2015 4:07 PM

smokeysailor wrote:




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


This is an example from my working system.


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

Password:

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 50 06 0f |........?....P..|

00000020 00 00 00 00 80 00 80 00 ff df c8 0e 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 e1 b7 f7 ec f4 f7 ec 2a |...............*|

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 52 11 16 68 09 00 66 53 66 53 66 |h...hR..h..fSfSf|

00000100 55 16 16 16 68 b8 01 66 61 0e 07 cd 1a 33 c0 bf |U...h..fa....3..|

00000110 0a 13 b9 f6 0c fc f3 aa e9 fe 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 a1 f6 01 e8 09 00 |...u...fa.......|

00000170 a1 fa 01 e8 03 00 f4 eb fd 8b f0 ac 3c 00 74 09 |............<.t.|

00000180 b4 0e bb 07 00 cd 10 eb f2 c3 0d 0a 41 20 64 69 |............A di|

00000190 73 6b 20 72 65 61 64 20 65 72 72 6f 72 20 6f 63 |sk read error oc|

000001a0 63 75 72 72 65 64 00 0d 0a 42 4f 4f 54 4d 47 52 |curred...BOOTMGR|

000001b0 20 69 73 20 63 6f 6d 70 72 65 73 73 65 64 00 0d | is compressed..|

000001c0 0a 50 72 65 73 73 20 43 74 72 6c 2b 41 6c 74 2b |.Press Ctrl+Alt+|

000001d0 44 65 6c 20 74 6f 20 72 65 73 74 61 72 74 0d 0a |Del to restart..|

000001e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|

000001f0 00 00 00 00 00 00 8a 01 a7 01 bf 01 00 00 55 aa |..............U.|

00000200


Your output does not have addresses 00-90. Can you please post it for verification?


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.

This is a bit confusing. Did you have all three, Yosemite, Windows 7 and Windows 10 as separate OSes at the same time? And you could switch between all three? If yes, it would require some esoteric partitioning on your 2009 Mac. Your 2009 Mac officially does not support W10 according to Apple.


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.

Let us do one step at a time. In the current state, I do not want to make the problem any worse than what it is. The Bless is just controlling boot ability. If the partition header(s) is(are) incorrect, no amount of such commands will help.


Can you also download the following two pieces of software?


Testdisk - http://www.cgsecurity.org/wiki/TestDisk_Download

GPT Fdisk - http://sourceforge.net/projects/gptfdisk/


These will help in scanning the disk and for potential issues and fixing them as necessary.

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55 replies
Question marked as Top-ranking reply
User profile for user: Loner T
Loner T
User level: Level 9
59,513 points

Oct 7, 2015 4:07 PM in response to smokeysailor

smokeysailor wrote:




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


This is an example from my working system.


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

Password:

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 50 06 0f |........?....P..|

00000020 00 00 00 00 80 00 80 00 ff df c8 0e 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 e1 b7 f7 ec f4 f7 ec 2a |...............*|

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 52 11 16 68 09 00 66 53 66 53 66 |h...hR..h..fSfSf|

00000100 55 16 16 16 68 b8 01 66 61 0e 07 cd 1a 33 c0 bf |U...h..fa....3..|

00000110 0a 13 b9 f6 0c fc f3 aa e9 fe 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 a1 f6 01 e8 09 00 |...u...fa.......|

00000170 a1 fa 01 e8 03 00 f4 eb fd 8b f0 ac 3c 00 74 09 |............<.t.|

00000180 b4 0e bb 07 00 cd 10 eb f2 c3 0d 0a 41 20 64 69 |............A di|

00000190 73 6b 20 72 65 61 64 20 65 72 72 6f 72 20 6f 63 |sk read error oc|

000001a0 63 75 72 72 65 64 00 0d 0a 42 4f 4f 54 4d 47 52 |curred...BOOTMGR|

000001b0 20 69 73 20 63 6f 6d 70 72 65 73 73 65 64 00 0d | is compressed..|

000001c0 0a 50 72 65 73 73 20 43 74 72 6c 2b 41 6c 74 2b |.Press Ctrl+Alt+|

000001d0 44 65 6c 20 74 6f 20 72 65 73 74 61 72 74 0d 0a |Del to restart..|

000001e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|

000001f0 00 00 00 00 00 00 8a 01 a7 01 bf 01 00 00 55 aa |..............U.|

00000200


Your output does not have addresses 00-90. Can you please post it for verification?


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.

This is a bit confusing. Did you have all three, Yosemite, Windows 7 and Windows 10 as separate OSes at the same time? And you could switch between all three? If yes, it would require some esoteric partitioning on your 2009 Mac. Your 2009 Mac officially does not support W10 according to Apple.


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.

Let us do one step at a time. In the current state, I do not want to make the problem any worse than what it is. The Bless is just controlling boot ability. If the partition header(s) is(are) incorrect, no amount of such commands will help.


Can you also download the following two pieces of software?


Testdisk - http://www.cgsecurity.org/wiki/TestDisk_Download

GPT Fdisk - http://sourceforge.net/projects/gptfdisk/


These will help in scanning the disk and for potential issues and fixing them as necessary.

Reply
User profile for user: smokeysailor
smokeysailor Author
User level: Level 1
0 points

Oct 6, 2015 3:12 PM in response to Loner T

Hi Loner T


Sorry for the delay in reply.


"Your output does not have addresses 00-90. Can you please post it for verification?"


What should I be doing to post verification? I apologize as I am new to Apple commands.


Either ways, I ran the sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null | hexdump -C command again and got the following output:


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 5b 14 |........?....@[.|

00000020 00 00 00 00 80 00 80 00 ff 17 c1 08 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 c9 c3 ac 9c 08 ad 9c 76 |...............v|

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


I must have made a copy/paste error.

What I meant was that I earlier had Win 7 loaded on boot ask partition with Yosemite. I downloaded Win 10 as an upgrade and both were working flawlessly. I could boot into either OS by hitting the Option Key. Then I downloaded El Capitan as an upgrade and started facing this problem.

Now, what do I do?

Thanks once again 🙂

Reply
User profile for user: Loner T
Loner T
User level: Level 9
59,513 points

Oct 6, 2015 3:28 PM in response to smokeysailor

This looks much better. There is a 18GB gap between the entry GPT 3 and GPT 4. Let us try the simpler fix to see if Windows will come up.


1. ELC has System Integrity Protection enabled by default. To disable it temporarily for diagnostics purposes, (this is the correct version of the nvram command you referenced earlier).

a. Boot into Local Recovery. Power down your Mac, power it back up, and hold the Command+R.

b. Run Utilities -> Terminal

c. Type csrutil disable

d. Exit Terminal

e. Reboot normally.

2. Run the following commands from OSX Terminal make the current entry bootable. Please ignore the the i386 MBR error, but not any other messages.

sudo fdisk -e /dev/disk0

p

setpid 4

07

flag 4

p

w

y


Reboot and Test for Windows.

3. If these do not work, then you are in Testdisk territory looking for a 'lost' NTFS header in the gap between GPT 3 and GPT 4.The easiest method is to refer to an existing discussion with a similar problem. Please see Bootcamp (Win10) didn't start after el Cap. update . Please post back your results after Step 2.

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User profile for user: smokeysailor
smokeysailor Author
User level: Level 1
0 points

Oct 6, 2015 4:20 PM in response to Loner T

Hi


On Step 2, this is what I got:


fdisk: could not open MBR file /usr/standalone/i386/boot0: No such file or directory

Enter 'help' for information

fdisk: 1> p

Disk: /dev/disk0 geometry: 30401/255/63 [488397168 sectors]

Offset: 0 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

fdisk: 1> setpid 4

Starting Ending

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

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

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

Partition id ('0' to disable) [0 - FF]: [C] (? for help) 07

fdisk:*1> flag 4

Partition 4 marked active.

fdisk:*1> p

Disk: /dev/disk0 geometry: 30401/255/63 [488397168 sectors]

Offset: 0 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: 07 1023 254 63 - 1023 254 63 [ 341524480 - 146872320] HPFS/QNX/AUX

fdisk:*1> w

fdisk: /dev/disk0: Operation not permitted

-MacBook-Pro:~ xxxxxx$ y

-bash: y: command not found


At reboot and pressing the Option Key, I got back the Recovery Disk and the Apple Drive on Boot Screen, but no option for Windows.


I ran diskutil list and noticed that there is no * before partition 4


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 154.1 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data 75.2 GB disk0s4



Now what 😟. Did I off up somewhere? In Step 1, I wrote exit and hit the power button to shut down and restart the laptop. Was that a mistake?

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User profile for user: smokeysailor
smokeysailor Author
User level: Level 1
0 points

Oct 6, 2015 5:05 PM in response to Loner T

Hi


Typing "csrutil status" showed enabled, so I followed all the commands again, this time making sure that I exited and restarted properly. After Step 2, Windows came back on the Boot Screen, along with the Apple and Recovery options, but I could not enter Windows. What I got was a "A disk read error has occurred. Press Ctrl+Alt+Del to restart" followed by a blinking cursor. Pressing those 3 keys did nothing. I rebooted into Apple and and saw that the Boot Camp Partition cannot be seen in either Finder, Start Up or Disk Utility. Running diskutil gave me:


diskutil list

/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 154.1 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data 75.2 GB disk0s4


Now what 😟?

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User profile for user: Loner T
Loner T
User level: Level 9
59,513 points

Oct 6, 2015 5:43 PM in response to smokeysailor

Your output confirms my instinct. You have a lost NTFS header in the gap between GPT3 and GPT4. On a 250Gb disk, you have 154G for OSX and 75G for Windows currently, which is 229Gb. You have about 21GB missing. This is the gap.


In step 3 there is link to another discussion. You need to download Testdisk and GPT Fdisk and start a scan on /dev/rdisk0 using Testdisk to look for lost NTFS partition. We want to run a Quick Search first before we go dumpster-diving.

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User profile for user: Loner T
Loner T
User level: Level 9
59,513 points

Oct 6, 2015 5:52 PM in response to smokeysailor

Do not use the links you have posted (ever!).


Testdisk - http://www.cgsecurity.org/wiki/TestDisk_Download

GPT Fdisk - http://sourceforge.net/projects/gptfdisk/


Testdisk binary must be run with sudo. This is what it should look like.


pwd

/Users/MyName/Downloads/testdisk-7.0

ls

78 INFO THANKS fidentify photorec readme.txt

AUTHORS NEWS VERSION fidentify.8 photorec.8 testdisk

COPYING README documentation.html icons qphotorec.8 testdisk.8


sudo ./testdisk /dev/rdisk0

Password:


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/rdisk0 - 1000 GB / 931 GiB (RO)









































>[Proceed ] [ Quit ]


Note: Disk capacity must be correctly detected for a successful recovery.

If a disk listed above has incorrect size, check HD jumper settings, BIOS

detection, and install the latest OS patches and disk drivers.

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User profile for user: smokeysailor
smokeysailor Author
User level: Level 1
0 points

Oct 6, 2015 6:36 PM in response to Loner T

Should I continue?




TestDisk 7.0, Data Recovery Utility, April 2015

Christophe GRENIER <grenier@cgsecurity.org>

http://www.cgsecurity.org


Disk /dev/rdisk0 - 250 GB / 232 GiB (RO)


Write access for this media is not available.

TestDisk won't be able to modify it.


- No partition from this disk must be mounted:

Open the Disk Utility (In Finder -> Application -> Utility folder)

and press Unmount button for each volume from this disk

- This media may be physically write-protected, check the jumpers.






>[ Continue ] Continue even if write access isn't available

[ Quit ] Return to disk selection

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User profile for user: smokeysailor
smokeysailor Author
User level: Level 1
0 points

Oct 6, 2015 6:44 PM in response to Loner T

Ok, I hit on Continue and I got this. I am stumped. 😕 Please guide me


Disk /dev/rdisk0 - 250 GB / 232 GiB (RO)


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: EFI GPT 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'.

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Boot Camp disappeared after El Capitan update

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