Yosemite Upgrade Broke Bootcamp

Question

Upgraded to Yosemite and now when I ALT Boot Windows 7 and Recovery partitions no longer show up. Using information from other threads I managed to get my Windows 7 partition to show up but when I select it I receive an ERROR READING DISK message. Is there any way to get this fixed?diskutil list/dev/disk0   #:                       TYPE NAME                    SIZE       IDENTIFIER   0:      GUID_partition_scheme                        *750.2 GB   disk0   1:                        EFI EFI                     209.7 MB   disk0s1   2:          Apple_CoreStorage                         647.3 GB   disk0s2   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3   4:       Microsoft Basic Data                         61.0 GB    disk0s4/dev/disk1   #:                       TYPE NAME                    SIZE       IDENTIFIER   0:                  Apple_HFS Mac HD                 *647.0 GB   disk1                                 Logical Volume on disk0s2                                 EE76C469-0C14-4592-986A-81FA25FAAF17                                 Unencrypteddiskutil cs listCoreStorage logical volume groups (1 found)|+-- Logical Volume Group 02310D8F-058E-4CCF-8B7F-DAAED96FD1EF    &#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;    Name:         Mac HD    Status:       Online    Size:         647348539392 B (647.3 GB)    Free Space:   18927616 B (18.9 MB)    |    +-&lt; Physical Volume 0ABB2748-5135-4046-ACBB-5768C422F26B    |   ----------------------------------------------------    |   Index:    0    |   Disk:     disk0s2    |   Status:   Online    |   Size:     647348539392 B (647.3 GB)    |    +-&gt; Logical Volume Family 067A450C-844D-4465-8F8B-3DF65E5E2FF9        ----------------------------------------------------------        Encryption Status:       Unlocked        Encryption Type:         None        Conversion Status:       NoConversion        Conversion Direction:    -none-        Has Encrypted Extents:   No        Fully Secure:            No        Passphrase Required:     No        |        +-&gt; Logical Volume EE76C469-0C14-4592-986A-81FA25FAAF17            ---------------------------------------------------            Disk:                  disk1            Status:                Online            Size (Total):          646977290240 B (647.0 GB)            Conversion Progress:   -none-            Revertible:            Yes (no decryption required)            LV Name:               Mac HD            Volume Name:           Mac HD            Content Hint:          Apple_HFSsudo gpt -vv -r show /dev/disk0gpt show: /dev/disk0: mediasize&#x3D;750156374016; sectorsize&#x3D;512; blocks&#x3D;1465149168gpt show: /dev/disk0: Suspicious MBR at sector 0gpt show: /dev/disk0: Pri GPT at sector 1gpt show: /dev/disk0: Sec GPT at sector 1465149167       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  1264352616      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC  1264762256     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC  1266031792    79977296          1346009088   119138304      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7  1465147392        1743          1465149135          32         Sec GPT table  1465149167           1         Sec GPT headersudo fdisk /dev/disk0Disk: /dev/disk0 geometry: 91201/255/63 [1465149168 sectors]Signature: 0xAA55         Starting       Ending#: id  cyl  hd sec -  cyl  hd sec [     start -       size]------------------------------------------------------------------------1: EE    0   0   2 -   25 127  14 [         1 -     409639] &lt;Unknown ID&gt;2: AF   25 127  15 - 1023 254  63 [    409640 - 1264352616] HFS+       3: AB 1023 254  63 - 1023 254  63 [1264762256 -    1269536] Darwin Boot*4: 0C 1023 254  63 - 1023 254  63 [1346009088 -  119138304] Win95 FAT32L

Loner T · Answer

You seem to have the same issue. I am glad the bug is consistent, so I know how to solve it. 😉One more test to confirm that it is the same issue, please post the output of sudo dd if&#x3D;/dev/rdisk0s4 count&#x3D;1 2&gt;/dev/null | hexdump -C.Then gap between GPT#3 and GPT#4 is where your NTFS header is most likely to be. Once you post the output, if you are comfortable I can point you to a thread which solves the same problem, if you are comfortable with some Terminal gymnastics and Testdisk and GPT Fdisk.

fhornedo · Answer

Loner T · Answer

Try the simple first step first to see if it works. sudo fdisk -e /dev/disk0setpid 407flag 4pwyReboot.Test 1 - Can you see Bootcamp Volume in Finder?Test 2 - Can you files in the Bootcamp Volume?Test 3 - Can you select Bootcamp in System Preferences -&gt; Startup Disk.Test 4 - If Test1,2,3 succeed, select Bootcamp and click Restart. Does Windows come up?If it does not, the NTFS header you found using dd is bogus.This thread has gone through the same issue - bootcamp not working after yosemite install.If you are uncomfortable using it, I can explain the steps individually to start the rebuild process.

fhornedo · Answer

I tried the steps and don&#x27;t see the Bootcamp partition in Finder. If you&#x27;d be willing to walk me through that would be great. I really appreciate it!

Loner T · Answer

1. Please post the output of sudo fdisk /dev/disk0.2. Are you saying the previous steps did not work in OSX Terminal, or you executed them and still cannot see any change?3. If the steps were executed successfully, but no change happened for Windows, then the linked article is where you should start. Are the steps in the linked article where you are running into an issue?

fhornedo · Answer

1. Please post the output of sudo fdisk /dev/disk0.Disk: /dev/disk0 geometry: 91201/255/63 [1465149168 sectors]Signature: 0xAA55         Starting       Ending#: id  cyl  hd sec -  cyl  hd sec [     start -       size]------------------------------------------------------------------------1: EE    0   0   2 -   25 127  14 [         1 -     409639] &lt;Unknown ID&gt;2: AF   25 127  15 - 1023 254  63 [    409640 - 1264352616] HFS+       3: AB 1023 254  63 - 1023 254  63 [1264762256 -    1269536] Darwin Boot*4: 07 1023 254  63 - 1023 254  63 [1346009088 -  119138304] HPFS/QNX/AUX2. Are you saying the previous steps did not work in OSX Terminal, or you executed them and still cannot see any change?Correct I executed them then after rebooting I still did not see any change3. If the steps were executed successfully, but no change happened for Windows, then the linked article is where you should start. Are the steps in the linked article where you are running into an issue?I will look at this one again...I got a bit lost trying to sort through the first time

Loner T · Answer

1. Do you have any third-party NTFS drivers like Paragon, Tuxera or NTFS-3g/NTFSfree on the OSX side?2. If #1 is false, if you notice the gap between GPT#3 and #4 is where your correct NTFS header is sitting.3. Testdisk scans the disk sector-by-sector (when using Deeper Search) and finds such headers. It has the ability to look for files within such partitions.4. Once you locate a deleted NTFS partition that looks familiar, the current GPT#4 is modified (deleted/added with correct start/end disk sectors), the Hybrid MBR is recreated, and then tested to verify that Windows comes up.

fhornedo · Answer

Is this helpful at all...I&#x27;m trying to sort through the other thread but I&#x27;m not sure I&#x27;m making the right selections

Loner T · Answer

Notice the start/end/size of the Test Bootcamp line and compares it, first to the Fdisk entry #4 and then the gap between GPT#3 and GPT#4. This is indeed very helpful.MBR*4: 07 1023 254  63 - 1023 254  63 [1346009088 -  119138304] HPFS/QNX/AUXGPT...  1264762256     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC  1266031792    79977296          1346009088   119138304      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7If you type "P", do you see any familiar files?

fhornedo · Answer

I should have posted this first I think:1. Do you have any third-party NTFS drivers like Paragon, Tuxera or NTFS-3g/NTFSfree on the OSX side?Not that I know of...I do use Parallels on occasion

fhornedo · Answer

Yes I see my files!

Loner T · Answer

The first image you posted, is excellent. The second image has what your current GPT looks like. Also notice the difference in size, 199114745 vs 119138304, this is where Yosemite corrupted your information.

Loner T · Answer

Please post a screen shot of your files, if you can. I would expect a file called "System Volume Information" in your list.

fhornedo · Answer

Loner T · Answer

1. If this is the only MS data entry, let us try this  first. 2. You need GPT Fdisk.     a. You need to delete GPT#4 as it is now.     b. Add a replacement GPT#4 using what you see on this screen start/end.     c. Recreate Hybrid MBR.     d. Reboot.3. Test.