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Repairing Boot Camp after creating new partition

Hi

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

Reply
180 replies

May 2, 2016 7:22 PM in response to Loner T

having a similar problem, tried to resize partition where bootcamp was, and now mac doesn't offer windows as a login option from the screen that you get when you hold down the option key while restarting. I can still choose OSX. Not sure what happened, but this thread keeps coming up when I try to google it and you seemed very helpful so I thought I would try.

Thank you in advance!

diskutil list

Last login: Sun May 1 11:17:44 on console

Shorbergs-MacBook-Pro:~ shorberg$ diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *750.2 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Macintosh HD 697.3 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 52.0 GB disk0s4

/dev/disk1 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme +200.3 MB disk1

1: Apple_HFS DuelystLauncher 200.2 MB disk1s1

Shorbergs-MacBook-Pro:~ shorberg$ sudo fdisk /dev/disk0s4

fdisk: /dev/disk0s4: Resource busy

Shorbergs-MacBook-Pro:~ shorberg$ sudo gpt -v -r show /dev/disk0s4

gpt show: unable to open device '/dev/disk0s4': Resource busy

Shorbergs-MacBook-Pro:~ shorberg$

Aug 4, 2016 5:55 AM in response to vaijensen

vaijensen wrote:



When I was following the advice you suggested, I ran into a problem at the 'write' command. The terminal gave me an "operation not permitted". I am the sole user of my computer.

😟

If you are running El Capitan, you need to disable SIP by booting into Local Recovery (not Internet Recovery) and running Utilities -> Terminal -> csrutil disable . Check with csrutil status before you boot normally.

Repairing Boot Camp after creating new partition

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