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Naritoat Author

Level 1

0 points

Boot camp lost after upgrading to Yosemite from mountain lion

I lost my windows7 boot camp after I upgrade to Yosemite from mountain lion. When I press ALT when rebooting there is no more alternative to boot for window anymore. I did read some thread about this but my case is different since when I tried to type 3 steps(diskutil.......etc) 😕 as LonerT user answers it did not work. The attached files here are what I faced with. Please help. I have a lot of important files in windows

MacBook Pro, OS X Yosemite (10.10), macbook pro

Posted on Nov 10, 2014 1:38 PM

Top-ranking reply

Loner T

Level 9

59,513 points

Posted on Nov 10, 2014 2:14 PM

You have also caught the Yosemite bug.

1. Please post the output of sudo fdisk /dev/disk0

2. Text output of commands is a bit more helpful than screen images for calculations.

3. The gap between GPT#3 and GPT#4 is where your lost NTFS header lies.

4. Please download Testdisk and GPT Fdisk. Let me know if you have the links or you need them.

View in context

82 replies

Jan 22, 2015 2:37 PM in response to Loner T

Loner T wrote:

Pick the First MS Data entry and press Enter. Do you see a "Deeper Search" option? I posted a screen shot earlier.

Deeper Search complete (it did took a long time to finish, about 24 hours)

here is the screen I'm seeing:

Jan 22, 2015 4:28 PM in response to Eugeniu_K

@ Loner T

I am assuming I should again "Pick the First MS Data entry and press Enter" ?

Jan 23, 2015 5:37 PM in response to Loner T

After Deeper Search, previous rows 4 and 5 are now 380 and 382:

and the List Files look the same as for 4 and 5

380:

382:

Is there any hope left to recover Windows 7 boot option? 😟

Loner T

Level 9

59,513 points

Jan 24, 2015 9:27 AM in response to Eugeniu_K

If this is all you have and these two do not seem to provide a path to recovery, do you want to look at Yosemite Upgrade, Bootcamp and Windows Gone as a mechanism for at least getting your files and starting over again?

Jan 25, 2015 3:49 PM in response to Loner T

@Loner T

Thank you very much for everything you have done so far, I guess you are right, data recovery is the only thing I have left in this case.

Don't even know whom to blame in this bug, was that the QA team or someone else. One thing I do now is: "Don't trust system updates" 🙂

Loner T

Level 9

59,513 points

Jan 25, 2015 5:01 PM in response to Eugeniu_K

I would not go that far, but Updates are generic in nature and can cause problems in specific environments.

Jan 27, 2015 3:46 AM in response to Loner T

Hi Loner T,

I've create another post.

Thank you!

Boot camp lost after upgrading to Yosemite from mountain lion