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coolio0071 Author

Level 1

0 points

Bootcamp Problems after Yosemite Update

Hello, community. As many before me quite recently, I've been having troubles with my win 7 bootcamp partition after updating to yosemite. Having gone through many methods online going into making the partition workable again, I've found Loner T's methods the only ones that seem to work.

I've followed most of the necessary steps I've garnered from a bunch of the other threads here, and have installed Parted Magic unto a bootable USB and with testdisk found a sector that seems to identically match my sudo fdisk /dev/disk0 output that I get in OS X:

Disk: /dev/disk0 geometry: 30515/255/63 [490234752 sectors]

Signature: 0xAA55

Starting Ending

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

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

1: EE 0 0 1 - 1023 254 63 [ 1 - 409639] <Unknown ID>

*2: AF 1023 254 63 - 1023 254 63 [ 409640 - 400650744] HFS+

3: AF 1023 254 63 - 1023 254 63 [ 401060384 - 1269536] HFS+

4: DA 1023 254 63 - 1023 254 63 [ 412110848 - 78123008] <Unknown ID>

In Parted Magic, after choose EFI/GPT, analyze, and quick search, I get,

Disk /dev/disk0 - 251 GB / 233 GiB - 490234752 sectors (RO)

Partition Start End Size in sectors

P EFI System 40 409639 409600 [EFI]

D Mac HFS 409640 400335143 399925504

D MS Data 314429448 402331648 87902201

D Mac HFS 401060384 402329919 1269536

D MS Data 402331648 490233848 87902201

>D MS Data 412110848 490233855 78123008

D Mac HFS 488965176 490234711 1269536

Structure: Ok. Use Up/Down Arrow keys to select partition.

Use Left/Right Arrow keys to CHANGE partition characteristics:

P=Primary D=Deleted

Keys A: add partition, L: load backup, T: change type, P: list files,

Enter: to continue

NTFS found using backup sector, blocksize=4096, 39 GB / 37 GiB

The MS Data on the bottom's start and size matches the one I've found earlier. So what do I do from now? I could not make out fully what to do at this point in the process, and would like further advising. Currently I am deep searching the MS Data partition. Thanks to all who respond beforehand (especially Loner T)!!

MacBook Pro with Retina display, OS X Yosemite (10.10)

Posted on Oct 19, 2014 10:15 PM

46 replies

Loner T

Level 9

59,513 points

Oct 21, 2014 1:22 PM in response to coolio0071

You do not have the Bootcamp entry which should be number 4. When you create the hybrid MBR did you use "2 3 4" (notice the spaces) and "Y' to add EFI to GRUB question? If not recreate the MBR again. It looks like you used "1 2 3" rather than "2 3 4".

coolio0071 Author

Level 1

0 points

Oct 21, 2014 1:46 PM in response to Loner T

I redid all the steps again carefully, and I still do not see it as a choice on startup. Should I boot from my windows recovery drive now or what else?

coolio0071 Author

Level 1

0 points

Oct 21, 2014 1:48 PM in response to coolio0071

And the two outputs once more,

	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 - 400650744] HFS+
3: AB 1023 254 63 - 1023 254 63 [ 401060384 -	1269536] Darwin Boot
4: 00	0 0 0 -	0 0 0 [	0 -	0] unused

gpt show: /dev/disk0: mediasize=251000193024; sectorsize=512; blocks=490234752

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 490234751

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 400650744 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

401060384 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

402329920 1728

402331648 87902201 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

490233849 870

490234719 32 Sec GPT table

490234751 1 Sec GPT header

coolio0071 Author

Level 1

0 points

Oct 21, 2014 2:01 PM in response to coolio0071

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 - 400650744] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 401060384 - 1269536] Darwin Boot

*4: 07 1023 254 63 - 1023 254 63 [ 402331648 - 87902201]

Actually, I just got this info now after creating the Hybrid MBR for the THIRD time, for some reason. Maybe I did screw up 2 times..? I still can't see my bootcamp in startup disk. Anyway, how should I proceed?

Loner T

Level 9

59,513 points

Oct 21, 2014 2:03 PM in response to coolio0071

You are still missing partition 4. Can you post the exact steps and your responses?

coolio0071 Author

Level 1

0 points

Oct 21, 2014 2:25 PM in response to Loner T

Annnnd after having redid steps 1-3, and rebooted, I get this output again...

#: 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 - 400650744] HFS+
3: AB 1023 254 63 - 1023 254 63 [ 401060384 -	1269536] Darwin Boot
4: 00	0 0 0 -	0 0 0 [	0 -	0] unused

I will now redo all the steps, rebooting after steps 1-3 once and then a second time after rebuilding the Hybrid MBR.

Michaels-MacBook-Pro-2:~ Michael$ 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: 490234752 sectors, 233.8 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): 59BDFEEB-1EB4-4529-94FE-3CBC2C3CD513

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 490234718

Partitions will be aligned on 8-sector boundaries

Total free space is 2604 sectors (1.3 MiB)

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

1 40 409639 200.0 MiB EF00 EF

2 409640 401060383 191.0 GiB AF05 Macintosh HD

3 401060384 402329919 619.9 MiB AB00 Re

4 402331648 490233848 41.9 GiB 0700 Microsoft basic data

Command (? for help): d

Partition number (1-4): 4

Command (? for help): n

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

First sector (34-490234718, default = 402329920) or {+-}size{KMGTP}: 402331648

Last sector (402331648-490234718, default = 490234718) or {+-}size{KMGTP}: 490233848

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/disk0: 490234752 sectors, 233.8 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): 59BDFEEB-1EB4-4529-94FE-3CBC2C3CD513

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 490234718

Partitions will be aligned on 8-sector boundaries

Total free space is 2604 sectors (1.3 MiB)

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

1 40 409639 200.0 MiB EF00 EF

2 409640 401060383 191.0 GiB AF05 Macintosh HD

3 401060384 402329919 619.9 MiB AB00 Re

4 402331648 490233848 41.9 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/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.

Michaels-MacBook-Pro-2:~ Michael$

I restarted now.

Output to check the current situation.

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

Password:

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 18 fb 17 |........?.......|

00000020 00 00 00 00 80 00 80 00 f8 47 3d 05 00 00 00 00 |.........G=.....|

00000030 53 01 00 00 00 00 00 00 52 01 00 00 00 00 00 00 |S.......R.......|

00000040 f6 00 00 00 01 00 00 00 40 ad 3a 7c b0 98 cf 01 |........@.:|....|

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

Michaels-MacBook-Pro-2:~ Michael$ sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 30515/255/63 [490234752 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 - 400650744] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 401060384 - 1269536] Darwin Boot

4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused

Michaels-MacBook-Pro-2:~ Michael$ sudo gpt -vv -r show /dev/disk0

gpt show: /dev/disk0: mediasize=251000193024; sectorsize=512; blocks=490234752

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 490234751

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 400650744 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

401060384 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

402329920 1728

402331648 87902201 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

490233849 870

490234719 32 Sec GPT table

490234751 1 Sec GPT header

Now I proceed to step 5.

Michaels-MacBook-Pro-2:~ Michael$ 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: 490234752 sectors, 233.8 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): 59BDFEEB-1EB4-4529-94FE-3CBC2C3CD513

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 490234718

Partitions will be aligned on 8-sector boundaries

Total free space is 2604 sectors (1.3 MiB)

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

1 40 409639 200.0 MiB EF00 EF

2 409640 401060383 191.0 GiB AF05 Macintosh HD

3 401060384 402329919 619.9 MiB AB00 Re

4 402331648 490233848 41.9 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): AF

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

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

Enter an MBR hex code (default AB): AB

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

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

Enter an MBR hex code (default 07): 07

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.

And now I check the output once more.