problem with mbr after partition

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problem with mbr after partition

I installed Yosemite, never checked if bootcamp worked after that. I decided to change a partition, but have since reverted back to only having two partitions.

Now I can't get into Bootcamp. Based on the other thread, here is the output of all the commands. Please note I am using FileVault.

Thank you for the help!!

$ 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 459.4 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 40.0 GB disk0s4

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD *459.1 GB disk1

Logical Volume on disk0s2

2781D41B-F9F1-4FDC-A2B3-EE7461C4553F

Unlocked Encrypted

$diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 4E5CA4E4-9DD6-44D1-B29D-FDC87E6045FF

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

Name: Macintosh HD

Status: Online

Size: 459418988544 B (459.4 GB)

Free Space: 0 B (0 B)

|

+-< Physical Volume A2466F6D-C059-4282-AE32-D381B0320865

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 459418988544 B (459.4 GB)

|

+-> Logical Volume Family E2CD128C-E50C-423C-BE24-A2420AD1FA75

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

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 2781D41B-F9F1-4FDC-A2B3-EE7461C4553F

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

Disk: disk1

Status: Online

Size (Total): 459074961408 B (459.1 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

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 897302712 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

897712352 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

898981888 78123008 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 - 897302712] <Unknown ID>

3: AB 1023 254 63 - 1023 254 63 [ 897712352 - 1269536] Darwin Boot

4: 0C 1023 254 63 - 1023 254 63 [ 898981888 - 78123008] Win95 FAT32L

$ sudo dd if=/dev/rdisk0 count=1 2>/dev/null | hexdump -C

00000000 33 c0 8e d0 bc 00 7c 8e c0 8e d8 be 00 7c bf 00 |3.....|......|..|

00000010 06 b9 00 02 fc f3 a4 50 68 1c 06 cb fb b9 04 00 |.......Ph.......|

00000020 bd be 07 80 7e 00 00 7c 0b 0f 85 0e 01 83 c5 10 |....~..|........|

00000030 e2 f1 cd 18 88 56 00 55 c6 46 11 05 c6 46 10 00 |.....V.U.F...F..|

00000040 b4 41 bb aa 55 cd 13 5d 72 0f 81 fb 55 aa 75 09 |.A..U..]r...U.u.|

00000050 f7 c1 01 00 74 03 fe 46 10 66 60 80 7e 10 00 74 |....t..F.f`.~..t|

00000060 26 66 68 00 00 00 00 66 ff 76 08 68 00 00 68 00 |&fh....f.v.h..h.|

00000070 7c 68 01 00 68 10 00 b4 42 8a 56 00 8b f4 cd 13 ||h..h...B.V.....|

00000080 9f 83 c4 10 9e eb 14 b8 01 02 bb 00 7c 8a 56 00 |............|.V.|

00000090 8a 76 01 8a 4e 02 8a 6e 03 cd 13 66 61 73 1c fe |.v..N..n...fas..|

000000a0 4e 11 75 0c 80 7e 00 80 0f 84 8a 00 b2 80 eb 84 |N.u..~..........|

000000b0 55 32 e4 8a 56 00 cd 13 5d eb 9e 81 3e fe 7d 55 |U2..V...]...>.}U|

000000c0 aa 75 6e ff 76 00 e8 8d 00 75 17 fa b0 d1 e6 64 |.un.v....u.....d|

000000d0 e8 83 00 b0 df e6 60 e8 7c 00 b0 ff e6 64 e8 75 |......`.|....d.u|

000000e0 00 fb b8 00 bb cd 1a 66 23 c0 75 3b 66 81 fb 54 |.......f#.u;f..T|

000000f0 43 50 41 75 32 81 f9 02 01 72 2c 66 68 07 bb 00 |CPAu2....r,fh...|

00000100 00 66 68 00 02 00 00 66 68 08 00 00 00 66 53 66 |.fh....fh....fSf|

00000110 53 66 55 66 68 00 00 00 00 66 68 00 7c 00 00 66 |SfUfh....fh.|..f|

00000120 61 68 00 00 07 cd 1a 5a 32 f6 ea 00 7c 00 00 cd |ah.....Z2...|...|

00000130 18 a0 b7 07 eb 08 a0 b6 07 eb 03 a0 b5 07 32 e4 |..............2.|

00000140 05 00 07 8b f0 ac 3c 00 74 09 bb 07 00 b4 0e cd |......<.t.......|

00000150 10 eb f2 f4 eb fd 2b c9 e4 64 eb 00 24 02 e0 f8 |......+..d..$...|

00000160 24 02 c3 49 6e 76 61 6c 69 64 20 70 61 72 74 69 |$..Invalid parti|

00000170 74 69 6f 6e 20 74 61 62 6c 65 00 45 72 72 6f 72 |tion table.Error|

00000180 20 6c 6f 61 64 69 6e 67 20 6f 70 65 72 61 74 69 | loading operati|

00000190 6e 67 20 73 79 73 74 65 6d 00 4d 69 73 73 69 6e |ng system.Missin|

000001a0 67 20 6f 70 65 72 61 74 69 6e 67 20 73 79 73 74 |g operating syst|

000001b0 65 6d 00 00 00 63 7b 9a c4 84 33 e8 00 00 00 fe |em...c{...3.....|

000001c0 ff ff ee fe ff ff 01 00 00 00 27 40 06 00 00 fe |..........'@....|

000001d0 ff ff ac fe ff ff 28 40 06 00 b8 c0 7b 35 00 fe |......(@....{5..|

000001e0 ff ff ab fe ff ff e0 00 82 35 20 5f 13 00 00 fe |.........5 _....|

000001f0 ff ff 0c fe ff ff 00 60 95 35 00 10 a8 04 55 aa |.......`.5....U.|

00000200

MacBook Pro (Retina, 15-inch, Mid 2014), OS X Yosemite (10.10)

Posted on Oct 18, 2014 10:26 AM

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Answer 1

Loner T

Level 9

59,513 points

Oct 18, 2014 10:57 AM in response to sum1else

Please post the output of

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

This may be easier to fix by just updating the MBR, but the output from the dd should help in deciding what is broken.

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Answer 2

sum1else Author

Level 1

0 points

Oct 18, 2014 2:05 PM in response to Loner T

Hi Loner,

Thanks for your response! here you go:

$ 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 60 95 35 |........?....`.5|

00000020 00 00 00 00 80 00 80 00 ff 0f a8 04 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 d5 74 25 d0 b5 25 d0 fe |.........t%..%..|

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 54 46 47 48 54 |occurred...TFGHT|

000001b0 20 20 20 69 73 20 6d 69 73 73 69 6e 67 00 0d 0a | is missing...|

000001c0 54 46 47 48 54 20 20 20 69 73 20 63 6f 6d 70 72 |TFGHT 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

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Answer 3

Loner T

Level 9

59,513 points

Oct 18, 2014 4:31 PM in response to sum1else

The NTFS header is intact. Please update the MBR using (ignore i386 boot error message), the following code will correct the partition id to match GPT#4 and make it bootable.

sudo fdisk -e /dev/disk0

setpid 4

07

flag 4

p

w

y

Reboot.

Test 1 - Bootcamp shows up in Finder.

Test 2 - Bootcamp volumes files are readable.

Test 3 - Bootcamp is selectable as a choice in System Preferences -> Startup Disk.

Test 4- If Test 3 succeeds, click on Restart.

If you get a hanging underline cursor at top left and Windows fails to come up, you will need Startup Repair.

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Answer 4

sum1else Author

Level 1

0 points

Oct 19, 2014 12:35 PM in response to Loner T

Loner, you are brilliant. Thank you so much.

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Answer 5

Oct 19, 2014 10:13 PM in response to sum1else

I just successfully installed Windows 8.1 Update 1 on BootCamp on Mac OS X Yosemite. Here is a step by step I just wrote, hope it helps y'all:

How to successfully install Windows 8, or above, on Mac OS X Mavericks or above:

Requirements:

1- Windows OS ISO Image file

2- An 8GBs USB Flash Drive

3- A good Internet connection as you will need to download the Windows compatible drivers for your Mac

Steps:

1- Open up Disk Utility and create an additional partition for Windows formatted as ExFat. 100GBs, or above, is recommended as update to the operating system, as well as Apps requiere space on your HD or SSD [This step can be done during Mac OS X's installation process]

2- Open up BootCamp Assistant

3- Make sure only the 'Create a Windows 7 or later version install disk' is checked and your USB Flash Drive plugged in and click 'Continue'

4- Click 'Choose' and select your Windows ISO Image file

5- Select the USB Flash Drive you will be using during the installation process and click continue to confirm

6- Once done, restart your Mac and hold down the 'alt/option' key on your keyboard to bring up the Boot Menu

7- Select the USB Flash Drive named Windows, not the UEFI Boot

8- Install Windows as you normally would

* Remember to press and hold the 'alt/option' key, and select the Windows Partition, whenever the installation process requires your Mac to restart

* http://msdn.microsoft.com/en-us/library/windows/apps/jj945423.aspx

* http://windows.microsoft.com/en-us/windows-8/install-windows-on-mac

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