Repairing Boot Camp after creating new partition

Do not use single quotes that I have shown here. It just indicates what you type. 😉

Enter '7'

Press Return Key

Enter 'flag 4'

Press Return Key

Enter 'p'

Press Return Key

Enter 'w'

Press Return Key

Enter 'y'

Press Return Key

Now Power cycle and hold the ALT key till you see icons from which you can select Windows (or Bootcamp).

Loner T, after you helped me fixing the bootcamp partition. There was a gap in disk utility between Macintosh HD and Bootcamp. I dragged M. HD

down so it had more space. Everything worked (Windows as well). In a early screenshot i saw the original size of Macintosh HD before the whole partition problem. It was 4 GB larger . I was stupid enough to enlarge the Macintosh HD with 4 GB to return it to the original size. Now Bootcamp changed into Disk0s4 and is greyed out. Windows does show when pressing alt/option but when i boot into windows it says: missing operating system. Is there any way to fix this?

I hope you can help.

Do you want to start a new thread in the Bootcamp forum and post a link to that new thread here? You may also want to post the latest output from the three commands in this thread to show the current state.

Yes, here's the thread : Bootcamp doesn't work, again.

Thanks for helping. The output of the commands are in the thread.

Doing this didn't solve my problem, i still can't access bootcamp. The only thing that changed is that on the selection menu with alt key i've windows listed again, but it's not working.

Please start a new thread and post a reference here. Your configuration will not work the way it is.

Please post the output of

1. sudo fdisk /dev/disk0

2. sudo gpt -vv -r show /dev/disk0

3. sudo dd if=/dev/rdisk0s6 count=1 2>/dev/null | hexdump -C

In the current setup, you have three choices,

1. Create a new hybrid MBR, which is fragile, and can break if you do any software upgrades or remove Yosemite.

2. Use an EFI Windows which is fully supported in Windows 8/8.1 on Late 2013 and newer hardware.

3. Use a second internal/external disk to install Yosemite.

Bootcamp use a MBR, so any disk which has more than 4 partitions, will not work for non-EFI bootcamp.

thank u 'loner t', u r a life safer, hope u are in good position in life by your knowledge.

I tried above method and achieved, but at last stage when i power cycled and tried to boot into windows then under score starts blinking continuously. then no further process starts at all-like windows logo appears...etc.

i am using 500gb,macbook pro, mid 2012, windows 8.1(bootcamp).

can anyone please help?!😕😢

Please start a new thread an post a reference here. If you can put the output of the four commands in this thread in the new thread, that would be wonderful.

repairing partition after installing Yosemite beta to other partition

to loner T

thank u for ur time

i am not able to create new thread ( really sorry tried many times),

i dont understand how to know the name of drive in which boot camp is created, it shows as "bootcamp"

1. Please remove any personal information, including your name, if you do not want it to be visible in a public forum.

2. Your thread may get removed due to reference to Yosemite.

3. This configuration is going to be painful, since you have a single disk system. I suggest removing the coming-in-fall OS and putting it on an external drive, if available. You will need a fast drive.

4. Let me look at the other thread.

Please remove references and create a new thread. I cannot access your old thread. 😟

i am sorry for the delay, i have no internet connection outside my house

my new thread solving bootcamp problems after partition

hope this works

solving bootcamp problems after partition