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arthurfyj Author

Level 1

0 points

Boot camp repaired but window crashed after creating new partition

i'm using mac air mid 2011. ( OS X El Capitan version 10.11).

I set up Boot Camp to dual-boot Windows on my MacBook Air. Everything was fine. But until recently after I made another partition. I wasn't aware that this would affect my Windows partition as I thought it was completely different.

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.

Eventuall i found a solution in apple support and fixed this problem. But the next problem existing is, i can't access to my window at all. When the boot option i choose window, it will come out with black screen and not running at all. Need help.

Model Name: MacBook Air

Model Identifi

Processor Name: Int

Processor Speez

MacBook Air, OS X El Capitan (10.11)

Posted on Oct 20, 2015 12:40 AM

27 replies

Loner T

Level 9

59,513 points

Oct 22, 2015 11:05 AM in response to arthurfyj

1. What year/model is your Mac?

2. You can use Internet Recovery (Command+Opt+R), but it will install OSX version that shipped with your Mac, not El Capitan.

arthurfyj Author

Level 1

0 points

Oct 22, 2015 11:07 AM in response to Loner T

MacBook Air (13-inch, Mid 2011)

So if i reinstall by internet, my bootcamp will still inside my newly reinstall OSX?

arthurfyj Author

Level 1

0 points

Oct 22, 2015 11:10 AM in response to Loner T

Actually the recovery HD is needed to bring my window back?

Can we do without bringing this recovery back? Like using the command key earlier which u guide.

Loner T

Level 9

59,513 points

Oct 22, 2015 11:19 AM in response to arthurfyj

arthurfyj wrote:

Actually the recovery HD is needed to bring my window back?

No.

Can we do without bringing this recovery back? Like using the command key earlier which u guide.

Yes.

Rebuild MBR to match the new GPT information thus resetting the Hybrid MBR. Use defaults for other questions (like partition codes). The only values that need modifications are the Boot flags and step 10. Accept all other defaults that Gdisk offers. Please see thesample Q&A as an example. These steps can be repeated if you make a mistake before you get to Step 12, otherwise start from Step 1 for these steps. Step 6 has numbers which are typed with a space between the numbers. Please see the sample Q&A before you execute these steps.

Sudo gdisk /dev/rdisk0
P (Print list of parts)
R (Recover)
O (print current Hybrid MBR)
H (chooses Hybrid)
Partitions numbers to be hybridized: 2 3
Y (Good for GRUB question)
N (part 2 boot flag)
Y (part 3 boot flag make NTFS bootable partition)
O (print current Hybrid MBR)
W (Write the new MBR)
Y (Yes! write the new MBR)
Reboot

Here is sample Q&A for this section. Please notice the Press Enter/Return.

Place EFI GPT (0xEE) partition first in MBR (good for GRUB)? (Y/N): Y

Creating entry for GPT partition #2 (MBR partition #2)

Enter an MBR hex code (default AF): Press Enter/Return

Set the bootable flag? (Y/N): N

Creating entry for GPT partition #3 (MBR partition #3)

Enter an MBR hex code (default 07): Press Enter/Return

Set the bootable flag? (Y/N): Y

Test 1 - Does Bootcamp Volume show up in Finder?

Test 2 - Can you see files in Bootcamp Volume?

Test 3 - Can you select Bootcamp in System Preferences -> Startup Disk?

Test 4 - If Test 3 is successful, select Bootcamp and Click Restart.

arthurfyj Author

Level 1

0 points

Oct 22, 2015 11:32 AM in response to Loner T

Thanks Loner T.

So do i need to create a new discussion?

So how do i can increase the space in my bootcamp without reinstalling my window? and not affecting my reboot option and window again?

Loner T

Level 9

59,513 points

Oct 22, 2015 11:39 AM in response to arthurfyj

No, you do not need to create a new discussion. Let us first bring back your Windows installation. If you re-install OSX later, your Windows will again stop working.

arthurfyj Author

Level 1

0 points

Oct 22, 2015 11:44 PM in response to Loner T

I Bring back my window now. So what i need to do now to increase the size?

Loner T

Level 9

59,513 points

Oct 23, 2015 4:07 AM in response to arthurfyj

Can you backup you files and Windows?

Nov 9, 2015 11:37 AM in response to Loner T

Loner T, sorry to jump into this thread, but I see you've been helping people out with Bootcamp issues. I created a separate thread here and was wondering if you could help me out please. Thanks in advance!

amj.62

Level 1

8 points

Sep 30, 2016 11:30 PM in response to Loner T

Firstly thank you for this post - really helpful. Was in the same position as the OP (the 5 partition situation), corrected that and windows now boots and all works fine as does OSX. The issue is that the 4th partition I created cant be accessed from Windows (can see it on OSX) - is there a way of doing this without damaging anything else?