I can no longer boot into OSX after using Partition Manager on the Bootcamp volume

Hi Experts,

I have a Macbook running 10.10 that has Windows 7 installed using Bootcamp. I was running out of space on the Mac side and planned to re-size the current partitions by decreasing the Windows partition and then use Disk Utility to increase the Mac partition with the additional free space.

I ran Partition Manager in Windows and re-sized the partition. After it finished, holding down the "option" key only gives me the option of booting to Windows. In the Bootcamp software, I can only select Windows as my start up disk.

Using local disk management, I can still see the Mac partition but how do I boot back into it?
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Alan HendersonRetired marine engineerCommented:
Try holding down the Alt/Option key as the system boots.

You should get a boot loader menu.
jnsimexAuthor Commented:
Hi Alan,

As i mentioned in my post, holding down alt/option only brings up to option to boot into Windows.

See attached image.

Alan HendersonRetired marine engineerCommented:
Apologies; I missed that point.

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Did you back up your Mac partition before trying to resize? Anything you try at this point runs the risk of making things worse.

Also, can you boot into the recovery partition by booting while holding down Command-R?
Also, if it was Paragon Partition Manager that you were using, you might contact their tech support.
I think you may find a explanation of what went wrong and a somewhat complicated fix here:  http://apple.stackexchange.com/questions/180352/bootcamp-wont-start-after-resizing-partition

I have not tried this myself, so can't guarantee it will work.
noxchoGlobal Support CoordinatorCommented:
I used in this case Refit tool and it worked for me: http://refit.sourceforge.net
Try to use it as well.
Or follow the advice from here: http://hints.macworld.com/article.php?story=20091111185717745
It suggests using external drive with OSX to boot from and perform necessary actions via Disk Utility.

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I've requested that this question be deleted for the following reason:

Not enough information to confirm an answer.
jnsimexAuthor Commented:
Hi Experts,

I ended up reinstalling OSX using the Yosemite USB installer and it is boot-able to both OS again.
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