You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

MacTavish_10 Author

Level 1

30 points

Repairing Boot Camp after creating new partition

I'm running OS X 10.9 and Windows 7 x64 Pro.

I set up Boot Camp to dual-boot Windows on my MacBook Pro Retina. Everything was fine. And just yesterday Apple released the Yosemite Beta for the public and I wanted to download this and give it a try. After some research, I found that creating a separate partition was the way to go, and so I made another partition.

I wasn't aware that this would affect my Windows partition as I thought it was completely different.

So now, when I boot up, there is no option to boot with Windows. But when I boot the Mac and select Startup Disk, it shows Boot Camp is still there and all my files etc are still there.

I have a 256SSD, 160GB was for the Mac, and I have 90GB set for Windows.

I made the new partition to 40GB (and the Mac was now 120GB).

Then once I completed that part, I restarted my Mac and the Windows boot option was no longer there.

I didn't even install the Yosemite yet. I went to Disk Utility and deleted the 40GB partition that I made.

Now I don't know what to do. I have a lot of important things which are still on my Windows. Is there a way to restore normal Boot Camp functionality?

MacBook Pro (Retina, 13-inch, Late 2013), OS X Mavericks (10.9.4)

Posted on Jul 25, 2014 8:20 AM

180 replies

Nov 23, 2015 2:51 PM in response to Loner T

i have the same problem, but when i do what u said this is what i get.

Loner T

Level 9

59,513 points

Nov 23, 2015 5:00 PM in response to diederik notten

Can you post a new discussion and include the output of the following Terminal commands?

diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

The "sudo" commands will prompt for your password, and it will not be echoed back. You may also see a warning about improper use of "sudo" and potential data loss due to "abuse" of the command.

Nov 23, 2015 7:10 PM in response to Loner T

https://discussions.apple.com/thread/7350576

Dec 8, 2015 9:51 AM in response to Loner T

I have a question similar to this but possibly different. You seem very knowledgeable and through. Would you mind helping me as well? I just signed up to get your assistance so please direct me the best way for this to happen.

Thanks!

Loner T

Level 9

59,513 points

Dec 8, 2015 9:53 AM in response to arrwhieayen

Please post a new discussion in Bootcamp forum. See Find answers and ask new questions for help.

Dec 8, 2015 10:09 AM in response to Loner T

So I went ahead and started a new discussion. You can find it here: Disk utility repair made Bootcamp partition innacessable.

Thanks so much for your assistance!

Dec 8, 2015 11:04 AM in response to Loner T

Hi Loner T I read the info you gave me two weeks ago and just followed each step and I was able to fix my problem! I was travelling for work the past two weeks and I didn't get to thank you. You are a wizard with computers! Thanks a lot!

Loner T

Level 9

59,513 points

Dec 8, 2015 12:05 PM in response to julcorona

Excellent. Please create backups for OS X, Windows, and create a Windows System Restore point.

Dec 12, 2015 3:24 PM in response to Loner T

I am facing the same problem. Can someone please help me??

Dec 12, 2015 3:26 PM in response to desiGrimm

Mohans-MacBook-Pro:~ mohanpagadala$ diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *251.0 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Macintosh HD 163.1 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 87.0 GB disk0s4

Loner T

Level 9

59,513 points

Dec 12, 2015 3:45 PM in response to desiGrimm

Can you post a new discussion and include the output of the following Terminal commands?

diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

The "sudo" commands will prompt for your password, and it will not be echoed back. You may also see a warning about improper use of "sudo" and potential data loss due to "abuse" of the command.

Dec 12, 2015 3:52 PM in response to Loner T

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *251.0 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Macintosh HD 163.1 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 87.0 GB disk0s4

Mohans-MacBook-Pro:~ mohanpagadala$

Mohans-MacBook-Pro:~ mohanpagadala$ diskutil cs list

No CoreStorage logical volume groups found

Mohans-MacBook-Pro:~ mohanpagadala$ sudo gpt -vv -r show /dev/disk0

Password:

gpt show: /dev/disk0: mediasize=251000193024; sectorsize=512; blocks=490234752

gpt show: /dev/disk0: Suspicious MBR at sector 0

gpt show: /dev/disk0: Pri GPT at sector 1

gpt show: /dev/disk0: Sec GPT at sector 490234751

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 318634168 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

319043808 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

320313344 169920512 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

490233856 863

490234719 32 Sec GPT table

490234751 1 Sec GPT header

Mohans-MacBook-Pro:~ mohanpagadala$ sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 30515/255/63 [490234752 sectors]

Signature: 0xAA55

Starting Ending

#: id cyl hd sec - cyl hd sec [ start - size]

------------------------------------------------------------------------

1: EE 1023 254 63 - 1023 254 63 [ 1 - 409639] <Unknown ID>

2: AF 1023 254 63 - 1023 254 63 [ 409640 - 318634168] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 319043808 - 1269536] Darwin Boot

4: 0C 1023 254 63 - 1023 254 63 [ 320313344 - 169920512] Win95 FAT32L

Mohans-MacBook-Pro:~ mohanpagadala$

Dec 12, 2015 3:54 PM in response to desiGrimm

https://discussions.apple.com/thread/7376016

Tamouh A

Level 1

8 points

Dec 18, 2015 12:08 PM in response to Loner T

Hello, I have the same problem , I tried what you said there but it does not work 😟😟

I hope you can help because i don't want to reinstall my windows

I have macbook pro 13 , OS X 10.11 - bootcamp windows 10

after i made the new partition a blue secret ask me to repair my windows when it's start

Loner T

Level 9

59,513 points

Dec 18, 2015 12:13 PM in response to Tamouh A

Can you post a new discussion and include the output of the following Terminal commands?

diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

The "sudo" commands will prompt for your password, and it will not be echoed back. You may also see a warning about improper use of "sudo" and potential data loss due to "abuse" of the command.

Please also see Find answers and ask new questions .

Repairing Boot Camp after creating new partition