Bootcamp lost after 10.10.3 update - how to recover? (with pastes)

Question

Level 1

4 points

Bootcamp lost after 10.10.3 update - how to recover? (with pastes)

Same as with other people, bootcamp gone after 10.10.3 update. I tried to solve it but couldn't... Any help appreciated. Seems based on the forum posts that this is fairly easy to solve as long as you know what to do (and what numbers to input into right places). Here is the information, maybe you would know how to solve this please?

$ 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_HFS Macintosh HD 445.0 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data 54.4 GB disk0s4

$ diskutil cs list

No CoreStorage logical volume groups found

$ 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 869140624 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

869550264 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

870819800 106285227 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

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

2: AF 25 127 15 - 1023 254 63 [ 409640 - 869140624] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 869550264 - 1269536] Darwin Boot

*4: 07 1023 254 63 - 1023 254 63 [ 870819800 - 106285227] HPFS/QNX/AUX

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

00000000 c2 c2 73 9b dc ae 7e 54 b8 05 07 57 84 61 fc d2 |..s...~T...W.a..|

00000010 fc 6f 4a 4b 07 0d e7 28 52 c7 27 ef e7 0a 65 33 |.oJK...(R.'...e3|

00000020 28 78 55 3b 14 01 84 cb 21 71 a8 41 9a 58 83 5c |(xU;....!q.A.X.\|

00000030 d2 ff 34 23 a0 d3 40 ce b9 89 fa 27 7f 94 83 c6 |..4#..@....'....|

00000040 ec 68 f9 c6 e5 46 62 c3 34 e4 55 61 f2 39 30 1a |.h...Fb.4.Ua.90.|

00000050 31 68 8f 44 4d 27 59 f8 77 d9 4e 8c 23 f4 48 97 |1h.DM'Y.w.N.#.H.|

00000060 79 2f 06 8b a0 11 23 04 60 b0 a1 eb f8 95 b9 cc |y/....#.`.......|

00000070 53 55 91 7b be 06 7d db ee 3f d5 c6 30 8c 1f 25 |SU.{..}..?..0..%|

00000080 97 71 88 5a 68 74 9b 1b 0d bb 28 e6 6e 61 e2 9f |.q.Zht....(.na..|

00000090 dc 8e 7e 1e 0e 38 2b 37 80 ab 9c c8 f7 48 87 41 |..~..8+7.....H.A|

000000a0 d4 bf 22 1a 74 7a 16 f1 7a 02 da f0 f9 ad a3 ba |..".tz..z.......|

000000b0 f1 db 25 8c 0a d6 41 66 29 4a 65 fa 8e 6f c2 82 |..%...Af)Je..o..|

000000c0 35 9b 75 17 17 ae 26 ce d5 13 12 9a 5a 2e 3d 71 |5.u...&.....Z.=q|

000000d0 80 bb 10 66 a6 07 ca 5b 56 eb 0d bf ff 46 d8 b0 |...f...[V....F..|

000000e0 1f 90 b0 22 9f fb 7c 0f ce b4 54 50 65 4e ff 9e |..."..|...TPeN..|

000000f0 c7 64 33 d7 38 77 5e ae 26 92 60 07 51 7e e9 46 |.d3.8w^.&.`.Q~.F|

00000100 30 4a 96 bf b9 ba bb c7 2e 94 31 ed 12 1c e6 c9 |0J........1.....|

00000110 71 af d2 a4 40 6e 6a 64 0c 07 ed 10 7b 79 6f fd |q...@njd....{yo.|

00000120 26 ac dd 96 ec b9 1d 64 12 d5 6c 08 31 59 87 cf |&......d..l.1Y..|

00000130 ce 10 3d 8c 43 9b 4f 78 40 b9 78 e3 cb 8d 17 eb |..=.C.Ox@.x.....|

00000140 c7 65 45 df 3d db b2 fc cf 98 27 48 ed a2 b3 43 |.eE.=.....'H...C|

00000150 b1 dc 90 80 bc c4 13 8b a3 99 b3 ae 48 48 70 0e |............HHp.|

00000160 03 fc de dd 03 47 82 9f 15 6a 24 8b b2 dc bd 7e |.....G...j$....~|

00000170 55 2a 16 5a 76 ca 03 9f ac dc d4 ac 3b 6e e6 4b |U*.Zv.......;n.K|

00000180 40 f7 f7 6b 05 37 59 13 38 86 dc 1b 60 f1 2d fc |@..k.7Y.8...`.-.|

00000190 99 4e 1f 21 03 b5 52 b8 a0 c7 22 1c 94 20 dc a5 |.N.!..R...".. ..|

000001a0 2e f5 96 1b ea a4 41 7f ba 79 5c 3c be 80 73 da |......A..y\<..s.|

000001b0 b5 17 68 cc b0 99 e8 46 87 5c 22 ef b3 47 b6 f4 |..h....F.\"..G..|

000001c0 ee 9b 65 d1 e6 7a 25 ca 33 c7 c2 98 3b 38 a5 ee |..e..z%.3...;8..|

000001d0 b7 57 e3 64 92 e3 09 13 54 40 4b 8e e7 6b 31 2d |.W.d....T@K..k1-|

000001e0 a0 87 9a cf a7 4e cf 4f f7 d2 9d 06 16 fd c5 9a |.....N.O........|

000001f0 69 93 eb 42 3b 25 a1 c1 8f a7 d1 83 36 a0 7b 65 |i..B;%......6.{e|

00000200

sudo gdisk /dev/rdisk0

Disk /dev/rdisk0: 977105060 sectors, 465.9 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): 00004479-1169-0000-433D-000029700000

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 977105026

Partitions will be aligned on 8-sector boundaries

Total free space is 6 sectors (3.0 KiB)

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

1 40 409639 200.0 MiB EF00 EFI system partition

2 409640 869550263 414.4 GiB AF00 Macintosh HD

3 869550264 870819799 619.9 MiB AB00 Recovery HD

4 870819800 977105026 50.7 GiB 0700 Microsoft basic data

What should I do to get this back? Thanks for your help!

MacBook Pro with Retina display, OS X Yosemite (10.10.3), Bootcamp with Windows 8.1

Posted on Apr 12, 2015 12:15 AM

Reply

Answer 1

prlblue

Level 1

9 points

Apr 12, 2015 1:26 AM in response to ohtonen

I have the same issue so looking for an answer like you.

Reply

Answer 2

Loner T

Level 9

59,471 points

Apr 12, 2015 3:48 AM in response to ohtonen

You can start with Testdisk and get GPT Fdisk also, in case it is needed. In most 10.10.x updates prior to 10.10.3, the issue manifested itself when a gap between GPT3 and GPT4 was visible. This was due to multiple 'live' NTFS headers on disk, causing Yosemite to move the incorrect partition header as the correct. This was related to any resizing attempts with tools which are buggy, including Yosemite DU.

In your case, no such gap is visible, yet your NTFS header is not valid. There are a couple of cases where a recovery was possible, but most such cases fail to be recovered because the damage that Yosemite inflicts is almost irreversible. 10.10.3 recovery update seems to be culprit.

Do you have a backup of Windows that you can restore from? You would also need an OS X backup to be safe.

Please see Bootcamp partition missing after yosemite installation as a reference and start with Testdisk scan.

Reply

Answer 3

Loner T

Level 9

59,471 points

Apr 12, 2015 3:49 AM in response to prlblue

Can you look at the outputs in the OP and compare yours to them? If they look similar, you can follow along. If they look different, for example, if there is a gap between GPT3/4 then please start a new discussion thread.

Reply

Answer 4

prlblue

Level 1

9 points

Apr 12, 2015 4:39 AM in response to Loner T

Thanks for your response. I am away in Spain till 16th April so will look into it once i get back.

Fortunately i only use a 55 Gb Windows partition on my retina pro flash drive, with a Storedge 128 Gb flash card for my data. That is still accessible via my OXS. No real loss if i have to reload windows 8.2 fortunately.

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Answer 5

Loner T

Level 9

59,471 points

Apr 12, 2015 4:49 AM in response to prlblue

prlblue wrote:

No real loss if i have to reload windows 8.2 fortunately.

It is the fastest method, if you only carry the OS on the internal drive and your important data is external (and is backed up regularly 😉 ).

Reply

Answer 6

ohtonen Author

Level 1

4 points

Apr 12, 2015 5:41 AM in response to ohtonen

My TestDisk is still running but this is what it shows currently:

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Answer 7

ohtonen Author

Level 1

4 points

Apr 12, 2015 5:46 AM in response to Loner T

For the first time in 8 years I have decided that this was my last Apple product. Yosemite has wasted tens of hours related to wifi problems, Mail not working and now destroying my whole work Windows machine (which of I didn't have latest backup). I don't see the point of being Apple customer anymore so next devices won't be Apple anymore. Also IOS8 problems are contributing to this. 😟

Reply

Answer 8

ohtonen Author

Level 1

4 points

Apr 12, 2015 6:00 AM in response to Loner T

Does this show the missing things?

Command (? for help): P

Disk /dev/rdisk0: 977105060 sectors, 465.9 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): 00004479-1169-0000-433D-000029700000

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 977105026

Partitions will be aligned on 8-sector boundaries

Total free space is 28162225 sectors (13.4 GiB)

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

1 40 409639 200.0 MiB EF00 EFI system partition

2 409640 869550263 414.4 GiB AF00 Macintosh HD

3 869550264 870819799 619.9 MiB AB00 Recovery HD

4 898981888 977104895 37.3 GiB 0700 BOOTCAMP

Reply

Answer 9

Loner T

Level 9

59,471 points

Apr 12, 2015 7:44 AM in response to ohtonen

This is the same as your GPT output. Testdisk will show damaged partitions and then a list of recoverable partitions. GPT shows the current partitions.

Reply

Answer 10

peliccan

Level 1

0 points

Apr 12, 2015 11:31 AM in response to Loner T

Use Windows 7 installation media and repair master boot record !! Restart. That's it !!

Reply

Answer 11

ohtonen Author

Level 1

4 points

Apr 12, 2015 12:48 PM in response to peliccan

I have windows 8.1

Should I run it through the bootcamp you mean? It says a warning that the whole existing Windows will be lost if I run the installer again...

Reply

Answer 12

Apr 12, 2015 1:46 PM in response to ohtonen

Just to add another frustrated Apple user who wanted to boot into W7 today and couldn't after updating to 10.10.3 two days ago. This has never happened to me before. I use W7 avery few months.

The computer is a 2009 iMac 27". This workhorse has never had a problem and gets every update from Apple. That is until 10.10.3.

When I try using the Windows 7 partition, I just get a a blank screen. Nothing happens. In addition, the function to hold the option key to get the boot selection is now unreliable. This has never happened to me on any previous update. BTW - I use a hardware password without disk encryption.

While I don't see it happening, Apple is disappointing me more and more with each release. Windows 10 seems promising. I use PCs all day at work and they never hiccup, falter, or complain and they never get rebooted or need it. It seems they are more secure not less now.

I am going go hold off fixing this in the hope some news or update from Apple fixes it. This is just so disappointing.

Reply

Answer 13

ohtonen Author

Level 1

4 points

Apr 13, 2015 12:59 AM in response to Loner T

Hi Loner T,

Does this help me to recover the partition (results from the TestDisk):

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Answer 14

Loner T

Level 9

59,471 points

Apr 13, 2015 7:18 AM in response to ohtonen

Please press Return to Continue. This is the list of damaged partitions.

Do no use left/right arrow keys in the list of partitions you see. Use only Up/Down keys and 'P - List Files'. You are eventually looking for a partition like this.

Reply

Answer 15

Loner T

Level 9

59,471 points

Apr 13, 2015 4:57 AM in response to Steven Kutoroff

Steven Kutoroff wrote:

Just to add another frustrated Apple user who wanted to boot into W7 today and couldn't after updating to 10.10.3 two days ago. This has never happened to me before. I use W7 avery few months.

The computer is a 2009 iMac 27". This workhorse has never had a problem and gets every update from Apple. That is until 10.10.3.

When I try using the Windows 7 partition, I just get a a blank screen. Nothing happens. In addition, the function to hold the option key to get the boot selection is now unreliable. This has never happened to me on any previous update. BTW - I use a hardware password without disk encryption.

While I don't see it happening, Apple is disappointing me more and more with each release. Windows 10 seems promising. I use PCs all day at work and they never hiccup, falter, or complain and they never get rebooted or need it. It seems they are more secure not less now.

I am going go hold off fixing this in the hope some news or update from Apple fixes it. This is just so disappointing.

Do you have backup of your Windows files/installation? All OSes have their issues. I usually wait to upgrade my critical machine for at least 6 months.

Reply