Bootcamp partition missing after yosemite installation

I gave up and did the custom install, for which Bootcamp requires it's own non-obvious partitioning/formatting tricks. Anyway, I was able to rescue all of my windows data thanks to your help. You're building some serious karma points, thank you!

I was out most of the day and could not provide any further input. I am glad to see your data is safe. 😀

I suggest backups of both OSes on separate external disks, as a baseline for the future restore, if you need them.

Loner T - THANK YOU!

You saved my butt from having to reinstall my bootcamp partition. Thank you!

Note to Apple: please release software that doesn't screw your customers over. Really. Shame on you.

m3tropolis wrote:

Note to Apple: please release software that doesn't screw your customers over. Really. Shame on you.

I have provided feedback to Apple via bug reports, etc. My contact with Apple folks has been very encouraging and positive.

I am glad that you were able to successfully resolve issues. Please make backups at the earliest you can.

Loner T,

I had OS X 10.x (possibly Snow Leopard) and Bootcamp (Windows XP). I upgraded OS X to 10.11 El Captain Beta. Unfortunately, I can not use my Windows XP now, it says; 'No bootable device --- insert boot disk press any key' though I start Bootcamp from start up manager. I can see the bootcamp partition and files in mac finder. When I try to select and boot by pressing option key there are only two menu icon 'Mac OS' and 'Recovery 10.11' but no 'bootcamp'. Some information:

# diskutil list

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Macintosh HD 96.3 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data SERVER 315.9 GB disk0s4

5: Microsoft Basic Data BOOTCAMP 87.1 GB disk0s5

# gpt -vv -r show /dev/disk0

gpt show: /dev/disk0: mediasize=500107862016; sectorsize=512; blocks=976773168

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 976773167

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 188012728 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

188422368 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

189691904 617058304 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

806750208 170022912 5 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

976773120 15

976773135 32 Sec GPT table

976773167 1 Sec GPT header

# fdisk /dev/disk0

Disk: /dev/disk0 geometry: 60801/255/63 [976773168 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 - 188012728] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 188422368 - 1269536] Darwin Boot

4: 0B 1023 254 63 - 1023 254 63 [ 189691904 - 617058304] Win95 FAT-32

Please help.

Hum

Please post the output of

sudo dd if=/dev/rdisk0s5 count=1 2>/dev/null | hexdump -C

You have a non-standard configuration which has the SERVER partition. It can be supported. Currently, you are pointing to the SERVER partition. Is that the Bootable Windows installation?

Hi,

Thank you for reply. 'SERVER' is a partition for localhost purpose and documents which is not bootable. Here is the output as you suggested:

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 2d 00 00 08 16 30 |........?.-....0|

00000020 00 00 00 00 80 00 80 00 ff 57 22 0a 00 00 00 00 |.........W".....|

00000030 00 00 0c 00 00 00 00 00 30 0c 00 00 00 00 00 00 |........0.......|

00000040 f6 00 00 00 01 00 00 00 8f 99 70 98 c9 70 98 a6 |..........p..p..|

00000050 9e 71 ef d9 fa 33 c0 8e d0 bc 00 7c fb b8 c0 07 |.q...3.....|....|

00000060 8e d8 e8 16 00 b8 00 0d 8e c0 33 db c6 06 0e 00 |..........3.....|

00000070 10 e8 53 00 68 00 0d 68 6a 02 cb 8a 16 24 00 b4 |..S.h..hj....$..|

00000080 08 cd 13 73 05 b9 ff ff 8a f1 66 0f b6 c6 40 66 |...s......f...@f|

00000090 0f b6 d1 80 e2 3f f7 e2 86 cd c0 ed 06 41 66 0f |.....?.......Af.|

000000a0 b7 c9 66 f7 e1 66 a3 20 00 c3 b4 41 bb aa 55 8a |..f..f. ...A..U.|

000000b0 16 24 00 cd 13 72 0f 81 fb 55 aa 75 09 f6 c1 01 |.$...r...U.u....|

000000c0 74 04 fe 06 14 00 c3 66 60 1e 06 66 a1 10 00 66 |t......f`..f...f|

000000d0 03 06 1c 00 66 3b 06 20 00 0f 82 3a 00 1e 66 6a |....f;. ...:..fj|

000000e0 00 66 50 06 53 66 68 10 00 01 00 80 3e 14 00 00 |.fP.Sfh.....>...|

000000f0 0f 85 0c 00 e8 b3 ff 80 3e 14 00 00 0f 84 61 00 |........>.....a.|

00000100 b4 42 8a 16 24 00 16 1f 8b f4 cd 13 66 58 5b 07 |.B..$.......fX[.|

00000110 66 58 66 58 1f eb 2d 66 33 d2 66 0f b7 0e 18 00 |fXfX..-f3.f.....|

00000120 66 f7 f1 fe c2 8a ca 66 8b d0 66 c1 ea 10 f7 36 |f......f..f....6|

00000130 1a 00 86 d6 8a 16 24 00 8a e8 c0 e4 06 0a cc b8 |......$.........|

00000140 01 02 cd 13 0f 82 19 00 8c c0 05 20 00 8e c0 66 |........... ...f|

00000150 ff 06 10 00 ff 0e 0e 00 0f 85 6f ff 07 1f 66 61 |..........o...fa|

00000160 c3 a0 f8 01 e8 09 00 a0 fb 01 e8 03 00 fb eb fe |................|

00000170 b4 01 8b f0 ac 3c 00 74 09 b4 0e bb 07 00 cd 10 |.....<.t........|

00000180 eb f2 c3 0d 0a 41 20 64 69 73 6b 20 72 65 61 64 |.....A disk read|

00000190 20 65 72 72 6f 72 20 6f 63 63 75 72 72 65 64 00 | error occurred.|

000001a0 0d 0a 4e 54 4c 44 52 20 69 73 20 6d 69 73 73 69 |..NTLDR is missi|

000001b0 6e 67 00 0d 0a 4e 54 4c 44 52 20 69 73 20 63 6f |ng...NTLDR is co|

000001c0 6d 70 72 65 73 73 65 64 00 0d 0a 50 72 65 73 73 |mpressed...Press|

000001d0 20 43 74 72 6c 2b 41 6c 74 2b 44 65 6c 20 74 6f | Ctrl+Alt+Del to|

000001e0 20 72 65 73 74 61 72 74 0d 0a 00 00 00 00 00 00 | restart........|

000001f0 00 00 00 00 00 00 00 00 83 a0 b3 c9 00 00 55 aa |..............U.|

00000200

Can you start a new discussion and post these two on that thread? It will avoid confusion between your issues and the OP?

New discussion started @ Bootcamp not working after El Captain Beta installation

Bootcamp not working after El Captain Beta installation

Hello there, can someone help me to solve this problem?

Yesterday i was update my windows 7, in a middle processing my macbook suddenly restart and reboot to mac osx. And then my bootcamp partition gone.

I tried to check with sudo but the partition is not there.

Can you start a new discussion to avoid confusion with the original discussion?

Ok here i the new discussion page

Bootcamp partition missing when updating windows