Mountain lion on Mac Pro...after boot camp can't get back into OS x!!!!

Hey all,
Not sure what is going on?!?!? I sucessfully set up windows on bay 3 of my mac pro following the Apple documentaion....success! However, when I go and try to boot back into OS X, I can't. All I get is the chime, then a white screen and pause. If I let go of any of the key combos (see below), it boots right back into windows.
List of things I can't do on boot are :
- hold shift and go into safe mode
- hold Command + R and go into recovery mode
- hold alt and look for boot drived
The only thing that I have succesfully done is gone into target disk mode and checked the drives on my macbook pro. They seem fine in disk utility.
Please help! I don't want to be doomed to life with only windows 7 on my mac pro.
Much thanks
D

As an ammendment, on my macbook pro, I have succesfully mounted my MAC PRO boot drive (mac pro is in target disk mode). Everything looks fine. So summary is...
-Can't use any of the options to force a log in to my mac pro.
-I can mount my mac pro boot drive to my macbook pro and boot it there
-allways defaults to windows.
Any knowledge (even obvious) is much appreciated.

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Hi All,
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I've tried installing from the installer exactly as downloaded from the App Store - this results in a grey screen, and I have to re-install Snow Leopard to get the machine running again.
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Does anyone have any sage advice that will get me running ML?
I do have a full error log I'm happy to share, if that will help.
Thanks in advance!

Using Cloning as a Backup Strategy
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http://www.bombich.com/software/updates/ccc-3.5.html
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Kappy wrote:
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http://docs.info.apple.com/article.html?artnum=106214
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SOLUTION: This was an error on my part. I bought my MacPro 4,1 without the WiFi card in it. Around the time I bought it, I had a Mac Mini that I was using for parts. I took the WiFi card (Model No. AR5BXB6) out of the Mac Mini and put it in the Mac Pro. Worked like a champ for SL and Lion. While I was in there yanking out drives, I decided to yank that out. The hint was that the ML USB boot could not see my WiFi card. After I took it out, it was operating like it should. I was able to do a Clean Install of Mountain Lion on my Crucial M4 SSD with no problems.
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Correct me if i'm wrong, but the original poster didn't ask or mention anything about Crossfire. (though as a side note, I have read that some people have sucessfully got their 7300gt's into SLI by purchasing a special dongle and downloading a hacked driver.)
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Loyalty4Life wrote:
Thank you for your reply! I'll be here all night.
I have the 3GHz Dual-Core Intel Xeon processors. I tried installing Vista ultimate with my 32 bit software, but I still get the same message (I own both legally, btw).
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When I installed Vista Ultimate 64-bit, I was using BootCamp beta, 1.2 or 1.3. I created the partition with BootCamp Assistant.app as you did. It's a 60GB partition that I formatted with NTFS with BC.
After starting the install in Tiger, I then simply inserted the Vista 64-bit DVD and that was it.
It just installed.
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I have never installed Windows using Leopard. When I updated to Leopard from Tiger nothing changed, but there seem to be more problems with Leopard and BC2.0 than there were with Tiger and the beta versions.
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Mountain lion on Mac Pro...after boot camp can't get back into OS x!!!!

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