How to repair bootcamp after messing up with partitions?

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How to repair bootcamp after messing up with partitions?

Hello there. I have a Macbook Pro Retina 15', I've created a new partition for the Yosemite but I didn't know it would mess up with my Boot Camp.

First I had this issue: (No bootable device --- insert boot disk and press any key) so I just used my bootable flash drive and try to repair the windows, of course its failed and starting showing up a new message error: "An error occurred while attempting to read the boot config data"

Then I follow the instructions on the first post: https://discussions.apple.com/thread/4144252?start=0&tstart=0

But the windows keeping showing the same error (An error occurred while attempting to read the boot config data).

I don't have Yosemite partition anymore, but I have a hole and can't resize it anymore:

Here is my diskutil list:

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.3 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Macintosh HD 246.4 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 216.0 GB disk0s4

And my sudo fdisk /dev/rdisk0

Thanks!

MacBook Pro with Retina display, Windows 7 x64 Professional

Posted on Jun 15, 2014 10:23 AM

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Answer 1

Jun 15, 2014 10:36 AM in response to Puding666

Back up all your data that you can. Start over by erasing and formatting your disk. Reinstall OSX the using Boot Camp Assistant reinstall Windows. You can not add or delete partitions on a drive containing a Boot Camp partition.

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Answer 2

Loner T

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Jun 15, 2014 11:29 AM in response to Puding666

Please post the output of

sudo gpt -vv -r show /dev/rdisk0

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Answer 3

Puding666 Author

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Jun 15, 2014 11:37 AM in response to BobTheFisherman

Reinstalling MAC OSX it's out of question right now, i can't. Bootcamp ok, maybe...

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Answer 4

Puding666 Author

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Jun 15, 2014 11:40 AM in response to Loner T

Here is:

It's seems I don't have the "boot" partition anymore, tried a few things on cmd but no success.

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Answer 5

Loner T

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Jun 15, 2014 12:20 PM in response to Puding666

When the disk was resized for Yosemite, DU paid no attention to Bootcamp.

Somewhere between block 482970192 and 555231232 is part of the data you may need. If the original partition had some additional "padding" for alignment, that information has now been hidden by this state.

There is a tool called Testdisk that can show you deleted partitions. Do you want to look at the tool? http://www.cgsecurity.org/wiki/TestDisk

Does Bootcamp partition show up as a mounted volume when MAC OS X is up and running? If yes, can you open the volume in Finder?

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Answer 6

Puding666 Author

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Jun 15, 2014 12:35 PM in response to Loner T

On TestDisk should I run an Analyse on disk0?

Bootcamp partition is normal here and I can open it like usual.

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Answer 7

Loner T

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Jun 15, 2014 1:45 PM in response to Puding666

Yes, you will need to analyse and "find" where the Bootcamp partition started, before the Yosemite partitioning was done. It also lets you look in directories once a partition is selected, which can help find lost files.

Please look at the Testdisk wiki, which has the step-by-step instructions.

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Answer 8

Puding666 Author

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Jun 15, 2014 2:01 PM in response to Loner T

Thanks, these are the results:

These partition I can recover, right?

I'm still lost on how to proceed.

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Answer 9

Puding666 Author

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Jun 15, 2014 2:26 PM in response to Puding666

Oh, I almost forgot, the first one it's maybe the boot partition?

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Answer 10

Loner T

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Jun 15, 2014 3:21 PM in response to Puding666

If you notice the lines that have MS Data and Boot entries, have a "P: list files". Can you post a listing from one of them? What version of Windows are/were you running?

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Answer 11

Puding666 Author

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Jun 15, 2014 4:45 PM in response to Loner T

The boot:

This one have called my attention, it's the bootcamp, I don't get, it's missing or not?

I'm runing Windows 7 x64 Professional.

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Answer 12

Loner T

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Jun 15, 2014 4:54 PM in response to Puding666

The three numbers at the top, Start, End, Size match your fdisk entry. This needs Windows Recovery.

Can you use this http://support.microsoft.com/kb/927392 to try and rebuild the BCD and fix your MBR? Look at the RebuildBcd part.

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Answer 13

Puding666 Author

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Jun 15, 2014 5:29 PM in response to Loner T

I tried to follow these steps:

bcdedit /export C:\BCD_Backup
c:
cd boot
attrib bcd -s -h -r
ren c:\boot\bcd bcd.old
bootrec /RebuildBcd

But it's failed at the first one.

Translation:

The store export operation has failed.
The requested system device cannot be found.

I also tried only bootrec /RebuildBcd but got the same error.

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Answer 14

Puding666 Author

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Jun 15, 2014 5:43 PM in response to Puding666

Reading this thread: http://superuser.com/questions/302603/problem-recreating-bcd-on-windows-7-64bit- the-requested-system-device-cannot-b I realize that I'm really ****** up, because the Macbook Pro Retina doesn't has any 2.0 usb ports, ****, since the begining thats why my repair always failed.

**** Jobs, why in **** you removed SuperDrive??

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Answer 15

Loner T

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59,513 points

Jun 15, 2014 6:29 PM in response to Puding666

There are options. If you do not have an external optical drive (DVD/CD), but if you have another MAC, you can use Firewire/Thunderbolt and Target Disk Mode to repair. The environment is different than in your referenced link.

Because of changes, System Volume Information may be out-of-sync with the GPT version external to Windows (prior to your repair actually fixing any issues).

Is your USB drive a bootable drive?

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