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Bootcamp not working after Yosemite update

Hi,

I have similar problem after updating to Yosemite, now I can't boot into windows. There is no Windows option at startup when holding on ALT button and in disk utility, it showed Mac OS X partition with disks greyed out. I updated to Yosemite on my 11 inch Mac air and Mac Pro with no problem, before I decided to update my sons iMac (which has his school work) and ran into this problem. I remembered I use a third party program called Paragon NTFS. Could this be the problem?

Please Help.

Posted on Oct 27, 2014 5:19 AM

55 replies

Nov 1, 2014 7:17 AM in response to Loner T

I Think we should go that route, GPT#2 as OS X , and GPT#3 from Testdisk start till end of disk.

Nov 1, 2014 8:43 AM in response to Redeagles-143

Loner T,

I have delete GPT#4, GPT#3 and GPT#2.

I might of create GPT#2 with start address 409600 instead of 409640. Is this why it is showing in Partition table scan as MBR: protection?

Loner T

Level 9

59,477 points

Nov 1, 2014 9:02 AM in response to Redeagles-143

1. All Mac disks are GPT with a Protective MBR.

2. You want to leave GPT#1 as is without any changes.

3. Start GPT#2 at the same start as it currently is (409640). The End should be one byte less than where Testdisk start is for Windows.

4. Create a new GPT#3 with the start from Testdisk, end should be at 1953523711.

5. Verify readability of Bootcamp volume and availability of files after Reboot.

6. Verify that you can see NTFS header with the new GPT#3.

7. If Step 6 is successful, create a new Hybrid MBR with GPT#3 as bootable.

8. Switch to Windows and check if you need Startup Repair or not. If OS X does not boot in this configuration, use the external boot disk to boot and test Windows.

Nov 1, 2014 2:37 PM in response to Loner T

see screen shot,

There seems to be a space between GPT#2 and GPT#3 and no NTFS header.

Loner T

Level 9

59,477 points

Nov 1, 2014 4:45 PM in response to Redeagles-143

In the logs that you posted, the following messages indicate that some partition headers were created but were incorrect. More than likely, Yosemite did these calculations and they were incorrect. The only consistent factor is 559GB/1093476352 as you mentioned.

Mac HFS 905665415 2139609992 1233944578

HFS blocksize=16777216, 631 GB / 588 GiB

This partition ends after the disk limits. (start=905665415, size=1233944578, end=2139609992, disk end=1953525168)

Mac HFS 1161907512 2138664807 976757296

HFS+ blocksize=4096, 500 GB / 465 GiB

This partition ends after the disk limits. (start=1161907512, size=976757296, end=2138664807, disk end=1953525168)

NTFS: Can't read MFT

MS Data 1953523711 3047000062 1093476352

NTFS, blocksize=4096, 559 GB / 521 GiB

This partition ends after the disk limits. (start=1953523711, size=1093476352, end=3047000062, disk end=1953525168)

The only changes are to GPT start/end, and they can be reversed. Testdisk found 781864960/1257201663/475336704 . You can change the GPT#2 end position. Gdisk uses absolute numbers as start/end, but has to be given +/- number for size. If Testdisk showed familiar files that is where a NTFS header exists.

One option is to run Testdisk again and look/confirm NTFS headers, but it will be a slow and long process.

Nov 1, 2014 4:52 PM in response to Loner T

Thats the only option right now. So now do I instruct Testdisk to look for the NTFS header? Same as before , analysis the disk? Please advice.

Loner T

Level 9

59,477 points

Nov 1, 2014 5:08 PM in response to Redeagles-143

You will need to start Testdisk and start a Deeper Scan.

Nov 3, 2014 6:34 PM in response to Loner T

Hi, once the deeper scan is finish in Testdisk, how or what am I looking for to find the NTFS header?

Loner T

Level 9

59,477 points

Nov 3, 2014 7:25 PM in response to Redeagles-143

Deeper Scan should produce a list of partitions. The ones which are of type MS Data is what you are interested in. Partitions of 2880 or 6140, etc, are not very useful. Partitions which are roughly 559GB are of interest. You can estimate the size by taking the Testdisk size number and dividing it by 2 x 1024 x 1024 or 2 ** 21 to get rough size in GB.

Nov 4, 2014 6:17 PM in response to Loner T

After the Deeper Scan, I only manage to find highlighted row which labeled BOOTCAMP,

And also this, which is the GPT 4 we defined earlier using GDISK

Loner T

Level 9

59,477 points

Nov 4, 2014 6:21 PM in response to Redeagles-143

I cannot see any of these images. Can you post links using a image sharing web site?

Nov 5, 2014 3:11 PM in response to Loner T

Here it is:-

estDisk 7.0-WIP, Data Recovery Utility, October 2014

Christophe GRENIER <grenier@cgsecurity.org>

http://www.cgsecurity.org

Disk /dev/rdisk0 - 1000 GB / 931 GiB - 1953525168 sectors (RO)

Partition Start End Size in sectors

D Mac HFS 858777824 860047359 1269536

D Mac HFS 858778087 860047622 1269536

D Mac HFS 858778360 860047895 1269536

D Mac HFS 858778585 860048120 1269536

D Mac HFS 858778778 860048313 1269536

D Mac HFS 858779003 860048538 1269536

D MS Data 859990016 1339123711 479133696

D Mac HFS 860047356 861316891 1269536

>D MS Data 860047360 1953523711 1093476352

D Mac HFS 863247054 871635663 8388610 [ D^A]

D MS Data 867803136 1400563711 532760576

D MS Data 868847979 868868717 20739 [NO NAME]

D Mac HFS 871635660 880024269 8388610 [ D^A]

D MS Data 875533547 875539720 6174

D MS Data 875539720 875545893 6174 [Boot]

D MS Data 879123715 879129888 6174

D MS Data 879129888 879136061 6174 [Boot]

D MS Data 893746232 893749111 2880 [EFISECTOR]

D MS Data 893820027 893826200 6174

D MS Data 893826200 893832373 6174 [Boot]

D MS Data 897548777 898920760 1371984 [GW ث݊ b~^dS

D MS Data 897548778 898920761 1371984 [GW ث݊ b~^dS

D MS Data 932034859 932041032 6174

D MS Data 932041032 932047205 6174 [Boot]

D MS Data 952570280 952573159 2880 [EFISECTOR]

D MS Data 979937371 979943544 6174

D MS Data 979943544 979949717 6174 [Boot]

D MS Data 1013826976 1013829855 2880 [EFISECTOR]

D MS Data 1134393777 1144085633 9691857 [NO NAME]

D MS Data 1163069408 1642203103 479133696

D Mac HFS 1174592326 1735057223 560464898 [^A]

D MS Data 1176798048 1655931743 479133696

D MS Data 1230635520 1709769215 479133696

D MS Data 1231222688 1710356383 479133696

D MS Data 1232721568 1711855263 479133696

D MS Data 1271677760 1750811455 479133696

D MS Data 1272642912 1751776607 479133696

D MS Data 1339123711 1818257406 479133696

D MS Data 1400563711 1933324286 532760576

D MS Data 1400563712 1953519615 552955904

D Mac HFS 1680633228 1764519307 83886080

D Mac HFS 1680633710 1764519789 83886080

D Mac HFS 1680633847 1764519926 83886080

D Mac HFS 1680633984 1764520063 83886080

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, 559 GB / 521 GiB

and

TestDisk 7.0-WIP, Data Recovery Utility, October 2014

Christophe GRENIER <grenier@cgsecurity.org>

http://www.cgsecurity.org

Disk /dev/rdisk0 - 1000 GB / 931 GiB - 1953525168 sectors (RO)

Partition Start End Size in sectors

D Mac HFS 782256782 790645391 8388610 [ D^A]

D MS Data 785033643 785039816 6174

D MS Data 785039816 785045989 6174 [Boot]

D MS Data 785039835 785046008 6174

D MS Data 785046008 785052181 6174 [Boot]

D MS Data 785046027 785052200 6174

D MS Data 785052200 785058373 6174 [Boot]

D MS Data 785058376 785061255 2880 [EFISECTOR]

D MS Data 785061256 785064135 2880 [EFISECTOR]

D MS Data 787314689 787519488 204800

D MS Data 787519488 787724287 204800

D MS Data 787724287 787929086 204800

>D MS Data 787781632 1953523711 1165742080 [BOOTCAMP]

D MS Data 787781638 1953523717 1165742080 [BOOTCAMP]

D Mac HFS 790645388 799033997 8388610 [ D^A]

D MS Data 792544065 1271677760 479133696

D MS Data 793509217 1272642912 479133696

D MS Data 795104427 795125165 20739 [NO NAME]

D MS Data 847607809 1400563712 552955904

D Mac HFS 857508292 858777827 1269536

D Mac HFS 857508555 858778090 1269536

D Mac HFS 857508828 858778363 1269536

D Mac HFS 857509053 858778588 1269536

D Mac HFS 857509246 858778781 1269536

D Mac HFS 857509471 858779006 1269536

D Mac HFS 858777820 1717146003 858368184

D Mac HFS 858777824 860047359 1269536

D Mac HFS 858778087 860047622 1269536

D Mac HFS 858778360 860047895 1269536

D Mac HFS 858778585 860048120 1269536

D Mac HFS 858778778 860048313 1269536

D Mac HFS 858779003 860048538 1269536

D MS Data 859990016 1339123711 479133696

D Mac HFS 860047356 861316891 1269536

D MS Data 860047360 1953523711 1093476352

D Mac HFS 863247054 871635663 8388610 [ D^A]

D MS Data 867803136 1400563711 532760576

D MS Data 868847979 868868717 20739 [NO NAME]

D Mac HFS 871635660 880024269 8388610 [ D^A]

D MS Data 875533547 875539720 6174

D MS Data 875539720 875545893 6174 [Boot]

D MS Data 879123715 879129888 6174

D MS Data 879129888 879136061 6174 [Boot]

D MS Data 893746232 893749111 2880 [EFISECTOR]

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

FAT32, blocksize=32768, 596 GB / 555 GiB

Loner T

Level 9

59,477 points

Nov 5, 2014 5:40 PM in response to Redeagles-143

This entry looks like the original GPT 4

>D MS Data 860047360 1953523711 1093476352

The candidate that was used was start/end/size of 781864960/1257201663/475336704, but the following is very different and 1165742080 is roughly 555GB/582GiB. Can you look for files in the following entry for Windows files? The one that is current GPT 3 can be changed. A bit confused that this did not show up in earlier Testdisk scans. The 781864960 is after 787781632, so it is possible for it show files which look familiar. Typically an entry like "System Volume Information" and other files together are the best clues to validity of the partitions.

My suggestion is to look for files in the following part to make sure this the right one.

>D MS Data 787781632 1953523711 1165742080 [BOOTCAMP]

Nov 6, 2014 5:57 AM in response to Loner T

These are the files in,

>D MS Data 787781632 1953523711 1165742080 [BOOTCAMP]

TestDisk 7.0-WIP, Data Recovery Utility, October 2014

Christophe GRENIER <grenier@cgsecurity.org>

http://www.cgsecurity.org

MS Data 787781632 1953523711 1165742080 [BOOTCAMP]

Directory /

>-rwxr-xr-x 0 0 4096 12-Apr-2011 11:43 ._.Trashes

drwxr-xr-x 0 0 0 12-Apr-2011 11:43 _RASHE~1.4XY

drwxr-xr-x 0 0 0 12-Apr-2011 11:43 .Trashes

drwxr-xr-x 0 0 0 12-Apr-2011 11:43 .Spotlight-V100

drwxr-xr-x 0 0 0 12-Apr-2011 11:43 _SEVEN~1

and in

D MS Data 787781638 1953523717 1165742080 [BOOTCAMP]

TestDisk 7.0-WIP, Data Recovery Utility, October 2014

Christophe GRENIER <grenier@cgsecurity.org>

http://www.cgsecurity.org

MS Data 787781638 1953523717 1165742080 [BOOTCAMP]

Directory /

No file found, filesystem may be damaged.

Loner T

Level 9

59,477 points

Nov 6, 2014 6:17 AM in response to Redeagles-143

This is what I would expect Testdisk to find once it found the correct partition headers.

I am surprised that this one is no longer showing up - 781864960/1257201663/475336704.

The only choice was to not use this size, but give it the entire disk. One option is to use this exact same size and just recreate the GPT#3 and see what files can be seen.

Does the Bootcamp volume show up in Finder and show files in it?

Bootcamp not working after Yosemite update