Bootcamp disk0s4 gone after Yosemite update

Question

Level 1

9 points

Bootcamp disk0s4 gone after Yosemite update

Hey everybody. Got a question for Loner_T.

I'm in the same boat, changed my BootCamp partition size and ended up not being able to boot it anymore since upgrading to Yosemite.

I'd like to know if I should go with the testdisk, GDT fdisk, gdisk solution or not. I'm stuck at actually identifying the correct start/end of my BC partition and I'm really looking to redo the whole partition and reinstall Windows 7. Btw, if I recover the partition, will I not have the same problem when I upgrade from Yosemite to the next OS X iteration?

Here's what I have so far:

MacBook-Pro-de-Michel:~ MB$ diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *256.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage 150.5 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data 75.0 GB disk0s4

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.1 GB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_HFS Macintosh HD 499.2 GB disk1s2

/dev/disk2

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFSX Intel SSD *150.2 GB disk2

Logical Volume on disk0s2

61D35AC9-DB5E-4E37-8540-F570E91DD3E2

Unencrypted

MacBook-Pro-de-Michel:~ MB$ diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group C666E211-D5E4-4B60-9D48-1C40DC8F333D

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

Name: Intel SSD

Status: Online

Size: 150549417984 B (150.5 GB)

Free Space: 18993152 B (19.0 MB)

|

+-< Physical Volume E7EF901D-7E54-49D8-8E26-334A69FF9FFC

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 150549417984 B (150.5 GB)

|

+-> Logical Volume Family 179EF81A-41F0-47D9-A480-256644BBEE18

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

Encryption Status: Unlocked

Encryption Type: None

Conversion Status: NoConversion

Conversion Direction: -none-

Has Encrypted Extents: No

Fully Secure: No

Passphrase Required: No

|

+-> Logical Volume 61D35AC9-DB5E-4E37-8540-F570E91DD3E2

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

Disk: disk2

Status: Online

Size (Total): 150178103296 B (150.2 GB)

Conversion Progress: -none-

Revertible: Yes (no decryption required)

LV Name: Intel SSD

Volume Name: Intel SSD

Content Hint: Apple_HFSX

MacBook-Pro-de-Michel:~ MB$ sudo fdisk /dev/devdisk0

Password:

fdisk: /dev/devdisk0: No such file or directory

MacBook-Pro-de-Michel:~ MB$ sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 31130/255/63 [500118192 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 - 294041832] <Unknown ID>

3: AB 1023 254 63 - 1023 254 63 [ 294451472 - 1269536] Darwin Boot

*4: 07 1023 254 63 - 1023 254 63 [ 353634304 - 146483200] HPFS/QNX/AUX

MacBook-Pro-de-Michel:~ MB$ sudo gpt -vv -r show /dev/disk0

gpt show: /dev/disk0: mediasize=256060514304; sectorsize=512; blocks=500118192

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 500118191

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 294041832 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

294451472 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

295721008 57913296

353634304 146483200 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

500117504 655

500118159 32 Sec GPT table

500118191 1 Sec GPT header

MacBook-Pro-de-Michel:~ MB$ sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null | hexdump -C

00000000 a0 b5 69 e9 6b e0 af 8f 71 55 59 c9 e2 4f ab 1b |..i.k...qUY..O..|

00000010 3e cc 0c f9 66 6b cc ca ca 9a 99 2f 17 15 35 8b |>...fk...../..5.|

00000020 fe cd 9f 0e f4 e1 a5 85 90 59 8a f8 59 a3 55 2b |.........Y..Y.U+|

00000030 27 ff bb 2d 83 85 55 8a 8b e4 a2 13 52 85 f1 e2 |'..-..U.....R...|

00000040 5e d0 de 47 73 12 94 94 b0 cd a5 ba a3 6e 22 88 |^..Gs........n".|

00000050 1f 80 86 7c d5 ca 45 22 67 ff 0f c2 5b e3 ed ea |...|..E"g...[...|

00000060 cc 3b 3a b0 42 85 30 a6 fb ed 49 c6 2b 60 ef 70 |.;:.B.0...I.+`.p|

00000070 ee f5 8f c3 49 09 7b 9a 6a 0b 7f ac 02 ed 4b d0 |....I.{.j.....K.|

00000080 15 b0 4c d8 dd 64 d9 f6 26 11 c4 17 10 a3 5c 33 |..L..d..&.....\3|

00000090 69 fc 8b 79 af cf 1c 72 04 f4 88 85 4a 54 2a 0c |i..y...r....JT*.|

000000a0 bc f6 cf eb 6b ea 89 76 44 ff d5 75 ab 64 f1 d6 |....k..vD..u.d..|

000000b0 01 89 37 4c 2e 02 fb 87 52 7b 8d a5 44 60 db d2 |..7L....R{..D`..|

000000c0 6e 72 f7 18 93 e8 9f 91 b2 42 4c 1a 37 b7 b5 e4 |nr.......BL.7...|

000000d0 db a1 3d 20 3e 40 2c 3b ca 5d 1a af 09 fc 23 b3 |..= >@,;.]....#.|

000000e0 a8 1a e4 af 90 a1 1f c5 7c 8b a5 67 3f 4e 97 02 |........|..g?N..|

000000f0 fa 3b 3a 94 24 71 dc be 87 1c 5f 8e 02 d8 17 7c |.;:.$q...._....||

00000100 1c 42 85 e2 b8 e8 37 64 eb 67 41 3a 7b 80 85 96 |.B....7d.gA:{...|

00000110 65 62 fe 6c 45 96 65 fd 76 60 df 60 bf 10 1f 12 |eb.lE.e.v`.`....|

00000120 71 9b 16 2e 71 bc 15 d4 4f d0 8b 7f ec ac 17 f1 |q...q...O.......|

00000130 bb 0f fe 3c ed b3 cc 88 f5 cd 3c f6 95 76 a2 88 |...<......<..v..|

00000140 bf f8 c8 e2 00 c3 13 df cd bf 4c 59 81 dd bc 21 |..........LY...!|

00000150 fc 3f ff ff 2f 4c 99 2c 2e 0e 8d f2 45 e6 92 6e |.?../L.,....E..n|

00000160 6e 01 fa 7f b1 18 2b 13 c4 d8 7b d6 64 fe 7e 08 |n.....+...{.d.~.|

00000170 e8 cf cb 2a d4 1d 71 9c a4 60 b2 46 e9 ae d3 ef |...*..q..`.F....|

00000180 63 45 97 f8 d2 8b 7f 28 fc 6e a4 de 25 f2 97 03 |cE.....(.n..%...|

00000190 7f fb 04 cd ca a5 7a a4 4a 80 6f 16 76 60 32 41 |......z.J.o.v`2A|

000001a0 c5 a4 bf cd 7d 34 77 11 2a a5 10 cd ba 99 28 88 |....}4w.*.....(.|

000001b0 75 6f 88 fa f9 0b 28 3f 54 a4 8a 92 c4 5e 5e e0 |uo....(?T....^^.|

000001c0 92 cf a3 00 ff fc 72 dc 63 40 c6 65 3d 12 bd 96 |......r.c@.e=...|

000001d0 ce ad 06 f6 06 aa ee 9f 62 34 f3 e9 57 2a 53 d4 |........b4..W*S.|

000001e0 46 a4 0b b1 ee 6e 31 8a 67 a0 39 55 57 41 f9 ab |F....n1.g.9UWA..|

000001f0 65 15 65 42 fe 91 9b 9c 4e 64 c5 3d a2 7e ad b6 |e.eB....Nd.=.~..|

00000200

The highlighted partition is the one where my Windows 7 files are:

Now, I've read some threads that you posted on, but I'm still unsure what I should input in GDT fdisk and gdisk.

Thanks.

MacBook Pro (15-inch Mid 2012), OS X Yosemite (10.10.1)

Posted on Dec 16, 2014 10:59 AM

Reply

Answer 1

Top-ranking reply

Loner T

Level 9

59,513 points

Dec 16, 2014 11:55 AM in response to Tyysker

1. Use Testdisk to locate the 'lost' NTFS header in the gap between GPT3 and GPT4.

2. Once located, GPT4 is deleted/recreated using GPT Fdisk (aka gdisk).

3. The gap between GPT3 and GPT4 seems to indicate a resized Windows partition using either a third-party tool, or Disk Utility and GPT/MBR manipulation.

4. The Gap + GPT4 are 204396496 sectors (roughly 102+GB).

5. Windows resizing is not recommended/supported by BCA when using the Hybrid MBR method (pure EFI/GPT are resizeable and are support on 2013+ Macs).

6. Yosemite causes problems, because there is a deleted NTFS header prior to resizing, and a new one. It uses the older version and causes a gap and causes problems. If you do not resize Windows, once it is fixed now, future versions will respect the current configuration since GPT and MBR will be in sync. It is difficult to predict what Apple BC engineers will do next in BC. There is enough feedback from myself alone on the subject. 😉

Reply

Answer 2

Tyysker Author

Level 1

9 points

Dec 16, 2014 12:55 PM in response to Loner T

I'm reading Bootcamp missing after expanding partition, and I need to identify first and last sectors to change the partition information with gdisk.

1. Isn't the NTFS header at 295721008 ? and the end at 500118158?

According to testdisk, the partition begins at 295723008 and gpt indicates that it begins at 295721008.

Next step is to use gdisk to change NTFS header to which sector?

I'm definitely out of my comfort zone and will need some guidances....

Reply

Answer 3

Loner T

Level 9

59,513 points

Dec 16, 2014 2:16 PM in response to Tyysker

GPT 3 Start	GPT 3 Size	GPT 3 End	NTFS Start	Sector Offset	NTFS Size	NTFS End
294451472	1269536	295721008	295723008	2000	204394489	500117496

The 'Sector Offset' being positive is good. A negative value means you lose GPT#3. The NTFS size is roughly 102GB which is good.

You need to use the following steps. If you see any error messages during the following steps, please stop and post back here with the error message. The following steps have values from your Testdisk output (and you can verify) in Steps 7 and 8.

Rebuild GPT4 using start/end offsets

Sudo gdisk /dev/rdisk0
P (print the full list of parts)
D (delete)
4 (part 4)
N (new part)
4 (part 4)
295723008 - Start offset in bytes (start point for Bootcamp part)
+204394489(Size offset as opposed to End offset)
0700 (Windows part type)
P (print list of all parts just to see what changes will be made)
W (Write the new GPT)
Y (Yes! really write the new GPT)

This will delete and re-write the GPT partition info for /dev/disk0s4.

Rebuild MBR to match the new GPT information thus resetting the Hybrid MBR. Use defaults for other questions (like partition codes).

Sudo gdisk /dev/disk0
P (Print list of parts)
R (Recover)
H (chooses Hybrid)
Partitions numbers to be hybridized: 2 3 4
Y (Good for GRUB question)
N (part 2 boot flag)
N (part 3 boot flag)
Y (part 4 boot flag make NTFS bootable partition)
W (Write the new MBR)
Y (Yes! write the new MBR)
Reboot

Test 1 - Does Bootcamp Volume show up in Finder?

Test 2 - Can you see files in Bootcamp Volume?

Test 3 - Can you select Bootcamp in System Preferences -> Startup Disk?

Test 4 - If Test 3 is successful, select Bootcamp and Click Restart

If you see a hanging underline cursor at the top left on a black screen, and it does not proceed further, you may need Windows Startup Repair or a tool called EasyBCD.

Reply

Answer 4

Tyysker Author

Level 1

9 points

Dec 16, 2014 2:01 PM in response to Loner T

Here it is:

TestDisk 7.0-WIP, Data Recovery Utility, October 2014

Christophe GRENIER <grenier@cgsecurity.org>

http://www.cgsecurity.org

MS Data 295723008 500117496 204394489

Directory /

>dr-xr-xr-x 0 0 0 17-Sep-2014 11:29 .

dr-xr-xr-x 0 0 0 17-Sep-2014 11:29 ..

dr-xr-xr-x 0 0 0 19-Nov-2013 01:55 $Recycle.Bin

dr-xr-xr-x 0 0 0 19-Nov-2013 04:44 Boot

dr-xr-xr-x 0 0 0 19-Nov-2013 02:03 Intel

dr-xr-xr-x 0 0 0 21-Nov-2013 12:06 NVIDIA

dr-xr-xr-x 0 0 0 13-Jul-2009 23:20 PerfLogs

dr-xr-xr-x 0 0 0 17-Aug-2014 09:11 Program Files

dr-xr-xr-x 0 0 0 17-Sep-2014 11:29 Program Files (x86)

dr-xr-xr-x 0 0 0 17-Sep-2014 11:29 ProgramData

dr-xr-xr-x 0 0 0 19-Nov-2013 01:50 Recovery

dr-xr-xr-x 0 0 0 17-Sep-2014 11:29 System Volume Information

dr-xr-xr-x 0 0 0 2-Dec-2013 18:30 Users

dr-xr-xr-x 0 0 0 29-Aug-2014 20:19 Windows

dr-xr-xr-x 0 0 0 19-Nov-2013 02:00 temp

-r--r--r-- 0 0 8192 19-Nov-2013 04:44 BOOTSECT.BAK

-r--r--r-- 0 0 2066 19-Nov-2013 02:02 RHDSetup.log

-r--r--r-- 0 0 383562 13-Jul-2009 21:38 bootmgr

-r--r--r-- 0 0 171136 2-Aug-2009 04:59 grldr

-r--r--r-- 0 0 17115586560 17-Sep-2014 15:15 pagefile.sys

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Answer 5

Tyysker Author

Level 1

9 points

Dec 16, 2014 3:12 PM in response to Loner T

Before proceeding, for gdisk to know where the NTSF part ends you need to specify the part size with the + sign. So it will calculate from start point, add the size to specify where the part ends.

As you wrote in the first gdisk, I need to input exactly those numbers, right?

I know what the numbers are referencing to, just need to double check. Upon confirmation, I'll proceed and post the results.

Reply

Answer 6

Loner T

Level 9

59,513 points

Dec 17, 2014 12:30 PM in response to Tyysker

Tyysker wrote:

As you wrote in the first gdisk, I need to input exactly those numbers, right?

Yes, Testdisk outputs start/end/size from which I have extracted the start and size in steps 7 and 8. They are correct.

Reply

Answer 7

Tyysker Author

Level 1

9 points

Dec 17, 2014 12:45 PM in response to Loner T

Just got a question, why should I set my second partition as not bootable? OS X is installed on the Intel SSD partition after all.

Last login: Wed Dec 17 15:32:50 on ttys001

MacBook-Pro-de-Michel:~ MB$ sudo gdisk /dev/disk0

GPT fdisk (gdisk) version 0.8.10

Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

Partition table scan:

MBR: hybrid

BSD: not present

APM: not present

GPT: present

Found valid GPT with hybrid MBR; using GPT.

Command (? for help): p

Disk /dev/disk0: 500118192 sectors, 238.5 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): 336F890F-1005-4D63-8C79-22402F354952

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 500118158

Partitions will be aligned on 8-sector boundaries

Total free space is 2668 sectors (1.3 MiB)

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

1 40 409639 200.0 MiB EF00 EFI System Partition

2 409640 294451471 140.2 GiB AF05 Intel SSD

3 294451472 295721007 619.9 MiB AB00 Recovery HD

4 295723008 500117496 97.5 GiB 0700 Microsoft basic data

Reply

Answer 8

Loner T

Level 9

59,513 points

Dec 17, 2014 12:52 PM in response to Tyysker

Bootability of an EFI partition is based on the corresponding GPT entry, the MBR entries are placeholders for such partitions and BCA creates the MBR to be in sync with the GPT.

You can verify it by running sudo bless --verbose --info.

Reply

Answer 9

Tyysker Author

Level 1

9 points

Dec 17, 2014 12:57 PM in response to Loner T

Here is the result:

MacBook-Pro-de-Michel:~ MB$ sudo bless --verbose --info

Password:

EFI found at IODeviceTree:/efi

Current EFI boot device string is: '<array><dict><key>IOMatch</key><dict><key>IOProviderClass</key><string>IOMedia </string><key>IOPropertyMatch</key><dict><key>UUID</key><string>704A48D1-3220-4B 19-B786-49EBAAA11176</string></dict></dict><key>BLLastBSDName</key><string>disk0 s3</string></dict></array>'

Boot option is 8BE4DF61-93CA-11D2-AA0D-00E098032B8C:Boot0080

Processing boot option 'Mac OS X'

Boot option matches XML representation

Found device: disk0s3

Disk boot device detected

Checking IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchS eriesAHCI/PRT0@0/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOB lockStorageDriver/M4-CT256M4SSD2 Media

Checking IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchS eriesAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOB lockStorageDriver/TOSHIBA MK5065GSXF Media

Checking IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchS eriesAHCI/PRT0@0/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOB lockStorageDriver/M4-CT256M4SSD2 Media/IOGUIDPartitionScheme/EFI System Partition@1

Checking IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchS eriesAHCI/PRT0@0/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOB lockStorageDriver/M4-CT256M4SSD2 Media/IOGUIDPartitionScheme/Intel SSD@2

Checking IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchS eriesAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOB lockStorageDriver/TOSHIBA MK5065GSXF Media/IOGUIDPartitionScheme/EFI System Partition@1

Checking IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchS eriesAHCI/PRT0@0/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOB lockStorageDriver/M4-CT256M4SSD2 Media/IOGUIDPartitionScheme/Recovery HD@3

Checking IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchS eriesAHCI/PRT1@1/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOB lockStorageDriver/TOSHIBA MK5065GSXF Media/IOGUIDPartitionScheme/Customer@2

Checking IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchS eriesAHCI/PRT0@0/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOB lockStorageDriver/M4-CT256M4SSD2 Media/IOGUIDPartitionScheme/Intel SSD@2/CoreStoragePhysical/Intel SSD/Intel SSD

Comparing member to IODeviceTree:/PCI0@0/SATA@1F,2/PRT0@0/PMP@0/@0:2 EQUAL

Found Boot!=Root aggregate media disk2

mount: /

Mount point for / is /

Aggregate boot path is IODeviceTree:/PCI0@0/SATA@1F,2/PRT0@0/PMP@0/@0:2

GPT detected

Booter partition required at index 3

System partition found

Booter partition found

Preferred system partition found: disk0s1

Preferred system partition found: disk1s1

Returning booter information dictionary:

<CFBasicHash 0x7fe5324125a0 [0x7fff7ba99cf0]>{type = mutable dict, count = 3,

entries =>

0 : <CFString 0x1006d8970 [0x7fff7ba99cf0]>{contents = "System Partitions"} = (

disk0s1,

disk1s1

)

1 : <CFString 0x1006d9150 [0x7fff7ba99cf0]>{contents = "Data Partitions"} = (

disk0s2

)

2 : <CFString 0x1006d9170 [0x7fff7ba99cf0]>{contents = "Auxiliary Partitions"} = (

disk0s3

)

}

finderinfo[0]: 15729022 => Blessed System Folder is /System/Library/CoreServices

finderinfo[1]: 16132917 => Blessed System File is /System/Library/CoreServices/boot.efi

finderinfo[2]: 0 => Open-folder linked list empty

finderinfo[3]: 0 => No alternate OS blessed file/folder

finderinfo[4]: 0 => Unused field unset

finderinfo[5]: 15729022 => OS X blessed folder is /System/Library/CoreServices

64-bit VSDB volume id: 0xAC8E6660305EECCD

Reply

Answer 10

Loner T

Level 9

59,513 points

Dec 17, 2014 1:18 PM in response to Tyysker

Tyysker wrote:

Here is the result:

MacBook-Pro-de-Michel:~ MB$ sudo bless --verbose --info

Password:

EFI found at IODeviceTree:/efi

mount: /

Mount point for / is /

Aggregate boot path is IODeviceTree:/PCI0@0/SATA@1F,2/PRT0@0/PMP@0/@0:2

GPT detected

Booter partition required at index 3

System partition found

Booter partition found

Preferred system partition found: disk0s1

Preferred system partition found: disk1s1

finderinfo[0]: 15729022 => Blessed System Folder is /System/Library/CoreServices

finderinfo[1]: 16132917 => Blessed System File is /System/Library/CoreServices/boot.efi

finderinfo[2]: 0 => Open-folder linked list empty

finderinfo[3]: 0 => No alternate OS blessed file/folder

finderinfo[4]: 0 => Unused field unset

finderinfo[5]: 15729022 => OS X blessed folder is /System/Library/CoreServices

64-bit VSDB volume id: 0xAC8E6660305EECCD

If you notice the EFI boot is based on GPT entry. The MBR entry does not require teh corresponding MBR to be bootable using the --legacy --legacydrivehint method as mentioned in man bless.

Reply

Answer 11

Tyysker Author

Level 1

9 points

Dec 17, 2014 1:51 PM in response to Loner T

Here are the results:

GPT rebuild:

MacBook-Pro-de-Michel:~ MB$ sudo gdisk /dev/rdisk0

Password:

GPT fdisk (gdisk) version 0.8.10

Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

Partition table scan:

MBR: hybrid

BSD: not present

APM: not present

GPT: present

Found valid GPT with hybrid MBR; using GPT.

Command (? for help): p

Disk /dev/rdisk0: 500118192 sectors, 238.5 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): 336F890F-1005-4D63-8C79-22402F354952

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 500118158

Partitions will be aligned on 8-sector boundaries

Total free space is 57913957 sectors (27.6 GiB)

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

1 40 409639 200.0 MiB EF00 EFI System Partition

2 409640 294451471 140.2 GiB AF05 Intel SSD

3 294451472 295721007 619.9 MiB AB00 Recovery HD

4 353634304 500117503 69.8 GiB 0700 BOOTCAMP

Command (? for help): d

Partition number (1-4): 4

Command (? for help): n

Partition number (4-128, default 4): 4

First sector (34-500118158, default = 295721008) or {+-}size{KMGTP}: 295723008

Last sector (295723008-500118158, default = 500118158) or {+-}size{KMGTP}: +204394489

Current type is 'Apple HFS/HFS+'

Hex code or GUID (L to show codes, Enter = AF00): 0700

Changed type of partition to 'Microsoft basic data'

Command (? for help): p

Disk /dev/rdisk0: 500118192 sectors, 238.5 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): 336F890F-1005-4D63-8C79-22402F354952

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 500118158

Partitions will be aligned on 8-sector boundaries

Total free space is 2668 sectors (1.3 MiB)

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

1 40 409639 200.0 MiB EF00 EFI System Partition

2 409640 294451471 140.2 GiB AF05 Intel SSD

3 294451472 295721007 619.9 MiB AB00 Recovery HD

4 295723008 500117496 97.5 GiB 0700 Microsoft basic data

Command (? for help): w

Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING

PARTITIONS!!

Do you want to proceed? (Y/N): y

OK; writing new GUID partition table (GPT) to /dev/rdisk0.

Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

Warning: The kernel may continue to use old or deleted partitions.

You should reboot or remove the drive.

The operation has completed successfully.

And the MBR rebuid:

MacBook-Pro-de-Michel:~ MB$ sudo gdisk /dev/disk0

GPT fdisk (gdisk) version 0.8.10

Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

Partition table scan:

MBR: hybrid

BSD: not present

APM: not present

GPT: present

Found valid GPT with hybrid MBR; using GPT.

Command (? for help): p

Disk /dev/disk0: 500118192 sectors, 238.5 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): 336F890F-1005-4D63-8C79-22402F354952

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 500118158

Partitions will be aligned on 8-sector boundaries

Total free space is 2668 sectors (1.3 MiB)

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

1 40 409639 200.0 MiB EF00 EFI System Partition

2 409640 294451471 140.2 GiB AF05 Intel SSD

3 294451472 295721007 619.9 MiB AB00 Recovery HD

4 295723008 500117496 97.5 GiB 0700 Microsoft basic data

Command (? for help): r

Recovery/transformation command (? for help): h

WARNING! Hybrid MBRs are flaky and dangerous! If you decide not to use one,

just hit the Enter key at the below prompt and your MBR partition table will

be untouched.

Type from one to three GPT partition numbers, separated by spaces, to be

added to the hybrid MBR, in sequence: 2 3 4

Place EFI GPT (0xEE) partition first in MBR (good for GRUB)? (Y/N): y

Creating entry for GPT partition #2 (MBR partition #2)

Enter an MBR hex code (default AF): AF05

Set the bootable flag? (Y/N): n

Creating entry for GPT partition #3 (MBR partition #3)

Enter an MBR hex code (default AB): AB00

Set the bootable flag? (Y/N): n

Creating entry for GPT partition #4 (MBR partition #4)

Enter an MBR hex code (default 07): 0700

Set the bootable flag? (Y/N): y

Recovery/transformation command (? for help): w

Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING

PARTITIONS!!

Do you want to proceed? (Y/N): y

OK; writing new GUID partition table (GPT) to /dev/disk0.

Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

Warning: The kernel may continue to use old or deleted partitions.

You should reboot or remove the drive.

The operation has completed successfully.

Test 1 - Does Bootcamp Volume show up in Finder?

Test 2 - Can you see files in Bootcamp Volume?

Test 3 - Can you select Bootcamp in System Preferences -> Startup Disk?

Test 4 - If Test 3 is successful, select Bootcamp and Click Restart

If you see a hanging underline cursor at the top left on a black screen, and it does not proceed further, you may need Windows Startup Repair or a tool called EasyBCD.

Test 1 through 4 GTG. The only difference is that I used the option-key to boot in Windows 7.

As expected, I get the black screen with blinking cursor.

Next step is to execute the Startup repair. Any guidance to offer? Or software to use? My superdrive is being replaced with the original HDD in the bay. I could reinstall the superdrive to use a CD/DVD, but would rather use a USB stick if possible.

Thx so far, I'm hopeful now! 😉

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Answer 12

Tyysker Author

Level 1

9 points

Dec 18, 2014 5:56 AM in response to Loner T

I don't have a stick with the ISO w/ bootcamp drivers on. I just might open up my MBP and put the superdrive back in to use the Windows 7 DVD. Unless you tell me it's rather easy to create the bootable stick.

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Answer 13

Loner T

Level 9

59,513 points

Dec 18, 2014 6:00 AM in response to Tyysker

Yes, it is. Connect an external Optical Drive, or use the .ISO. Run BCA and use the first two options "Create..." and "Download..." and use a USB2 Flash disk. You should be able to use this USB2 for Startup Repair.

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Answer 14

Tyysker Author

Level 1

9 points

Dec 18, 2014 11:42 AM in response to Loner T

I used my superdrive. Got to System Recovery, but the thing is that my W7 version is newer than the DVD version, thus cannot actually start the System Recovery Tools. I'll need to download latest Windows 7 ISO and use BCA to use the USB stick.

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Answer 15

Loner T

Level 9

59,513 points

Dec 18, 2014 1:43 PM in response to Tyysker

There is a different method which may work better.

1. Using http://windows.microsoft.com/en-us/windows7/create-a-system-repair-disc, create a System Repair Disk. It requires a blank DVD.

2. Use http://windows.microsoft.com/en-us/windows/what-are-system-recovery-options#what -are-system-recovery-options=windows-7 to run Startup Repair from the DVD created in Step 1.

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