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Can't Boot BootCamp After Resize!

So should i delete the newly created partition and do it again using /dev/rdisk0?

So I am creating a new hybird MBR and I got to this step:
Unused partition space(s) found. Use one to protect more partitions? (Y/N):

What should I do???
 
Last edited:
Thank you so much you saved windows for me. This is so much better than having to format my hard drive and re-installing everything. It takes less work but comes with a risk and I feel the risk I took was worth it seeing windows fully restored. Thanks again
 
Can't boot BootCamp after resize

I had a similar problem. I resized and created a new partition on the Macintosh HD. After that my Windows 8 Boot Camp no longer bootable. Thats all I have done to the disk.

I have gdisk installed but I'm too scared I will screw up even more. Is my problem can be fix without requiring me to start a fresh windows installation trough Boot Camp Assistant? Please guide me on how to fix my MBR partition table. If possible I would like to have my new partition, which I believe the GPT #4 to be accessible from the windows.

Thank you in advance. :)

This are the result from "sudo gpt -r -vv show /dev/rdisk0"

Code: 
gpt show: /dev/rdisk0: mediasize=320072933376; sectorsize=512; blocks=625142448
gpt show: /dev/rdisk0: PMBR at sector 0
gpt show: /dev/rdisk0: Pri GPT at sector 1
gpt show: /dev/rdisk0: Sec GPT at sector 625142447
      start       size  index  contents
          0          1         PMBR
          1          1         Pri GPT header
          2         32         Pri GPT table
         34          6         
         40     409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
     409640  446835552      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC
  447245192    1269544      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
  448514736   78125000      4  GPT part - 48465300-0000-11AA-AA11-00306543ECAC
  526639736     847240         
  527486976   97654784      5  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
  625141760        655         
  625142415         32         Sec GPT table
  625142447          1         Sec GPT header


This are the result from "sudo fdisk /dev/disk0"

Code: 
Disk: /dev/disk0	geometry: 38913/255/63 [625142448 sectors]
Signature: 0xAA55
         Starting       Ending
 #: id  cyl  hd sec -  cyl  hd sec [     start -       size]
------------------------------------------------------------------------
 1: EE 1023 254  63 - 1023 254  63 [         1 -  625142447] <Unknown ID>
 2: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
 3: 00    0   0   0 -    0   0   0 [         0 -          0] unused      
 4: 00    0   0   0 -    0   0   0 [         0 -          0] unused
 
b4rry, how did you resize the partition and create another? With what tool?

Your drive has a protective mbr - i.e. your disc is now GPT only.
With a Boot Camp created partition it would be expected to have a hybrid mbr rather then a protective mbr.
Did you change this mbr?
 
Hi Quackers, thank you for looking at my problem.

I just resized it with Disk Utility.

I just did some reading that we can only have 3 partitions in hybrid MBR. So that will be one for the EE, one for my Mac OS X partition, and last one for my windows 8. So I won't be able to access the new created partition. But that is find.

Just desperately need to get the Windows 8 boot-up again and access the Mac OS X drive from the Windows. Do you think we can accomplish that?
 
We might need murphychris to have a look.

The first thing I would try would be to attempt to delete the new partition just created.
Then I would resize the partition that you originally shrank back to its previous size.

I would try rebooting at that point and see what shows up in the Alt + boot menu and what boots.
I really can't see Windows booting at that point as you currently have no hybrid mbr.

Is the Bootcamp partition appearing in the Finder window?
 
Yes, the Bootcamp partition appear in the Finder.

I think with gdisk we can recreate the hybrid MBR and set the boot flag as well. But I'm just not too confident doing it my self without a gdisk experience person guiding me. Worrying I might make the condition worst or lost booting to my Mac OS X.
 
Yes, we can create a new hybrid mbr but I would prefer that your partitions were returned to how they were before as mbr can only handle 4 partitions, whereas you have 5 currently.

On the one hand I suspect a new hybrid mbr would work ok.
On the other hand I am not happy about the fact that you currently have no hybrid mbr and yet you have a Boot Camp partition. Something ate your hybrid mbr :eek:
 
Sorry Quackers, I been very busy these past 2 days. Today I managed to fix my problem by following Murphychris previous instruction.

So first you're going to make backups of all important data, just in case. Then you're going to run gdisk in interactive mode:
Code:
sudo gdisk /dev/disk0

? gets you a list of commands
r will take you to the recovery menu
? lists recovery commands
h to create a new hybrid MBR

If you want to do it Apple's way, you can enter 2 3 4 to add all of your partitions to the MBR. Gdisk will then ask for each of those partitions if you want to accept the default partition type, which you do by just hitting return, and if you want to set the boot flag for that partition. You do not want the boot flag set for partitions 2 and 3, just for 4 - the Windows partition.

When done, you'll use the w command to write the new partition maps to disk.
Click to expand...

So, in my case I entered "2 4 5". Now every things works as it should be. I also able to access my Macintosh HD and my new partition from the windows 8 bootcamp.

Thank you for all the help. Cheers.. :)
 
b4rry said:
Sorry Quackers, I been very busy these past 2 days. Today I managed to fix my problem by following Murphychris previous instruction.



So, in my case I entered "2 4 5". Now every things works as it should be. I also able to access my Macintosh HD and my new partition from the windows 8 bootcamp.

Thank you for all the help. Cheers.. :)
Click to expand...
You created a new hybrid mbr then. That's good! :)

What's not so good is that your partition 3 is not now protected by the mbr as it isn't included (not that you could include it, having 5 partitions).

What that means is that any partitioning tool that isn't fully GPT-aware will consider that partition as free space and therefore fair game to be over-written.
 
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