Repairing Boot Camp after creating new partition

I am getting this:

sudo gdisk /dev/disk0

Password:

GPT fdisk (gdisk) version 0.8.7

Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

Partition table scan:

MBR: protective

BSD: not present

APM: not present

GPT: present

Found valid GPT with protective MBR; using GPT.

Command (? for help):

You seem to think I know what problem you've having, and therefore I'm somehow able to give you a step by step to fix it. I have no idea what you're trying to accomplish. The result you've posted is completely normal expected behavior when running gdisk.

In the first page you had mentioned:

sudo gdisk /dev/disk0

If you get any error messages at this point, report the error messages, don't proceed further.

I do get it that this is a warning prompt. I just wanted to check with you if I am not doing anything wrong. Thanks.

@Christopher Murphy,

I am able to boot into Windows now. Thank you so much 🙂 🙂 You are really awesome. I wish I could return you the favour. Not many take their time off and help people with such complex issues. Thanks again. I will be posting a detailed note on each and every step that I have followed, later.

By the way, where did gdisk install, on Mac, if I want to uninstall it? Thank again and again 😀

Christopher Murphy,

Could I trouble you to take a look at my thread?

https://discussions.apple.com/thread/5248278

Thank you in advance.

Christopher Murphy can you please help me. I upgraded to lion a month ago and tried to boot my windows partition and received the following message: bootcamp partition missing operating system. I erased my whole harddrive, reinstalled snow leopard from disk, created bootcamp partition and restored it from disk image, then used migration assistant to transfer files from my lion backup (such as music and pictures). Before using the migration assistant to transfer the files, my windows that was restored from the disk image worked fine. After transferring the files from the lion backup, Snow Leapord works fine. When I reboot using Bootcamp as startup disk I get the error: bootcamp partition missing operating system.

Results for "sudo gpt -r -v show disk0"

Results for "sudo fdisk /dev/disk0"

Thanks in advance!

Christopher Murphy can you please help me. I upgraded to lion a month ago and tried to boot my windows partition and received the following message: bootcamp partition missing operating system. I erased my whole harddrive, reinstalled snow leopard from disk, created bootcamp partition and restored it from disk image, then used migration assistant to transfer files from my lion backup (such as music and pictures). Before using the migration assistant to transfer the files, my windows that was restored from the disk image worked fine. After transferring the files from the lion backup, Snow Leapord works fine. When I reboot using Bootcamp as startup disk I get the error: bootcamp partition missing operating system.

Results from "sudo gpt -r -v show disk0"

Results from "sudo fdisk /dev/disk0"

Thanks in advance!

The disk either doesn't have a GPT or it's corrupt. What's the result from each of the following commands:

diskutil list

diskutil verifyDisk /dev/disk0

Result of "diskutil list"

Result of "diskutil verifyDisk /dev/disk0"

Weird result from diskutil verifyDisk; verifyDisk and verifyVolume aren't the same thing. But in any case the GPT appears to be corrupt and needs to be repaired. And it looks like the hybrid MBR is wrong so a new one needs to be created. These aren't coincidences, you're using something that is modifying the partition maps on the disk incorrectly.

Download and install gdisk and execute this command and lets see what it says (that is a lower case L):

sudo gdisk -l /dev/disk0

Result of "sudo gdisk -l /dev/disk0"

Huh. OK two things in a new Terminal window:

sudo dmesg

That will take up more than a page, maybe several pages. Copy and past the entire contents from the line of the command to the end to pastebin.org, set the expiration for at least a week, and then post the URL.

Next:

sudo gdisk /dev/disk0

At the command prompt:

v <return>

Pastebin URL: http://pastebin.com/Q5PSLfBi

Result of "sudo gdisk /dev/disk0"

So what's up with the abnormal shutdowns?

As for fixing the hybrid MBR, in gdisk you'll go to the recovery menu with r <return> and then h <return> to make a new hybrid MBR. Then enter

2 3

That's 2<space>3<return>

Add GPT to MBR first entry? Yes.

<return> to accept default type code

GPT 2 MBR 2 bootable? No.

<return> to accept default type code

GPT 3 MBR 3 bootable? Yes.

Protect more partitions? No.

w <return>

y

Reboot.

What abnormal shutdowns? I got the blue screen with disk memory wiping away about a week or two ago on the Bootcamp partition but hurried up and held the power button until it shut off if that's what you're talking about

For the steps you mentioned i'm getting another option: