Bootcamp gone after Yosemite Install

Question

SercanMac Author

Level 1

0 points

Bootcamp gone after Yosemite Install

I can see bootcamp partition on disk utility bu it is unmounted.

I have this results from terminal, what can I do?

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Macintosh HD 447.3 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 552.0 GB disk0s4

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: FDisk_partition_scheme *2.0 TB disk1

1: Windows_NTFS Samsung 2.0 TB disk1s1

Sercans-Mac-mini:~ Racsen$ diskutil cs list

No CoreStorage logical volume groups found

Sercans-Mac-mini:~ Racsen$ sudo gpt -vv -r show /dev/disk0

Password:

gpt show: /dev/disk0: mediasize=1000204886016; sectorsize=512; blocks=1953525168

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 1953525167

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 873720896 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

874130536 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

875400072 1144

875401216 1078122496 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

1953523712 1423

1953525135 32 Sec GPT table

1953525167 1 Sec GPT header

Mac mini

Posted on Aug 29, 2015 7:54 AM

Reply

Answer 1

Top-ranking reply

Loner T

Level 9

59,513 points

Aug 29, 2015 8:05 AM in response to SercanMac

Can you post the output of

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

Reply

Answer 2

SercanMac Author

Level 1

0 points

Aug 29, 2015 8:06 AM in response to Loner T

Here (Thank you very much for your response)

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 90 2d 34 |........?.....-4|

00000020 00 00 00 00 80 00 80 00 ff d7 42 40 00 00 00 00 |..........B@....|

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 53 5e a5 3a 8c a5 3a a2 |........S^.:..:.|

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

Reply

Answer 3

SercanMac Author

Level 1

0 points

Aug 29, 2015 8:37 AM in response to Loner T

I think the problem is with this numbers? I read your other solutions.

I think I have to rewrite GPT partition info with start 875400072?

874130536 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

875400072 1144

875401216 1078122496 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

Reply

Answer 4

Loner T

Level 9

59,513 points

Aug 29, 2015 8:48 AM in response to SercanMac

No. Your GPT is correct. The MBR needs to be correctEd.

Reply

Answer 5

SercanMac Author

Level 1

0 points

Aug 29, 2015 8:49 AM in response to Loner T

How can I do that?

Reply

Answer 6

Loner T

Level 9

59,513 points

Aug 29, 2015 8:59 AM in response to SercanMac

Please ignore the i386 MBR message in the following steps, but do not ignore any others.

sudo fdisk -e /dev/disk0

p

setpid 4

07

flag 4

p

w

y

Reboot and test.

Reply

Answer 7

SercanMac Author

Level 1

0 points

Aug 29, 2015 9:07 AM in response to Loner T

No luck 😟

Sercans-Mac-mini:~ Racsen$ sudo fdisk -e /dev/disk0

Password:

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: 121601/255/63 [1953525168 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 - 873720896] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 874130536 - 1269536] Darwin Boot

*4: 07 1023 254 63 - 1023 254 63 [ 875401216 - 1078122496] HPFS/QNX/AUX

fdisk: 1> setpid 4

Starting Ending

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

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

*4: 07 1023 254 63 - 1023 254 63 [ 875401216 - 1078122496] HPFS/QNX/AUX

Partition id ('0' to disable) [0 - FF]: [7] (? for help) 07

fdisk: 1> flag 4

Partition 4 marked active.

fdisk:*1> p

Disk: /dev/disk0 geometry: 121601/255/63 [1953525168 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 - 873720896] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 874130536 - 1269536] Darwin Boot

*4: 07 1023 254 63 - 1023 254 63 [ 875401216 - 1078122496] HPFS/QNX/AUX

fdisk:*1> w

Device could not be accessed exclusively.

A reboot will be needed for changes to take effect. OK? [n] Y

Writing MBR at offset 0.

Reply

Answer 8

SercanMac Author

Level 1

0 points

Aug 29, 2015 12:24 PM in response to SercanMac

Any help? It is my badluck I think I'm having problems with my backup external HDD. I had to recover files from bootcamp. I'll never be using bootcamp again...

Reply

Answer 9

Loner T

Level 9

59,513 points

Aug 29, 2015 12:51 PM in response to SercanMac

Do you have any third-party NTFS software?

Reply

Answer 10

SercanMac Author

Level 1

0 points

Aug 29, 2015 11:38 PM in response to Loner T

Yes, I have Samsung External HDD. It installs Paragon NTFS I think.

Reply

Answer 11

Loner T

Level 9

59,513 points

Aug 30, 2015 5:26 AM in response to SercanMac

Paragon NTFS driver interferes with the Apple NTFS read-only driver. As a test, can you remove it and then verify that you can see Bootcamp in Finder and in System Preferences -> Startup Disk.

Reply