Boot Camp Lion upgrade problem

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Level 1

5 points

Boot Camp Lion upgrade problem

(Re-posted from different discussion group)

I've just upgraded to Lion but am now unable to run Boot Camp. It doesn't appear in the StartUp options when I restart and hold down the option key. It was all working fine immediately before the uprade.

Disk Utility sees disk0s4, which I believe is my Boot Camp partition, but it is greyed out. I've tried Repair Disk but get the message " Invalid BS_impBoot in boot block: ecfcec".

Any ideas?

"diskutil list" in Terminal offers the following:

0: GUID_partition_scheme [disk0]

1: EFI [disk0s1]

2: Apple_HFS Machintosh HD [disk0s2]

3: Apple_Boot Recovery HD [disk0s3]

4: Microsoft Basic Data [disk0s4]

This suggests to me that my Windows files are there but inaccessible as my iMac is no longer recognising the Boot Up disk for Windows.

Boot Camp Lion upgrade problem

iMac, Mac OS X (10.7)

Posted on Jul 24, 2011 5:25 AM

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Answer 1

The hatter

Level 9

61,031 points

Jul 24, 2011 7:07 AM in response to Troy Park

I posted a tip or two - the partition number has changed and you need to use your Windows 7 DVD and edit BCD.

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Answer 2

Troy Park Author

Level 1

5 points

Jul 24, 2011 9:03 AM in response to The hatter

Thank you for responding. I shall try to figure out how to edit BCD. I presume I'll be looking to get Windows somehow to reconfigure itself as disk0s4 instead of disk0s3.

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Answer 3

The hatter

Level 9

61,031 points

Jul 24, 2011 11:25 AM in response to Troy Park

Boot Configuration Data (BCD)

How to Modify the BCD Store Using Bcdedit

BCDedit Windows Boot Manager

BCD for Windows 7 and Lion

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Answer 4

Troy Park Author

Level 1

5 points

Jul 24, 2011 4:56 PM in response to The hatter

Thanks for all you help. Unfortunatley, nothing worked, not even the Windows 7 installation disk system repair. Neither "Bootrec.exe/FixBoot" nor "Bootrec.exe/RebuildBcd" could find the required installed elements. So, I ended up biting the bullet and reinstalling BootCamp and Windows, which have worked fine (although I am sitting here waiting for 84 Windows 7 updates to install!). Anyway, the original version from the Windows 7 install disk is now fully functional with Lion. Thanks again.

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Answer 5

bwl11

Level 1

10 points

Jul 31, 2011 7:24 PM in response to Troy Park

Troy Park,

I had the same thing happen to me when I upgraded to Lion. I was able to regain my windows partition by simply going into utilities/bootcamp assistant and then downloading the newest microsoft support software when it prompted me to. After that, I quit the bootcamp assitant app and when I restarted and held down the option key my windows partition was there again.

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Answer 6

vahid212

Level 1

0 points

Jan 10, 2012 9:05 AM in response to Troy Park

few days ago i resized my mac os x partition suddenly turned my bootscamp partition to disk0s4 and i reinstalled again windows and i lost all my files on windows i has never such problem under mac os x leopard what is the problem with lion

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Answer 7

The hatter

Level 9

61,031 points

Jan 10, 2012 9:31 AM in response to vahid212

you chanded the partition id number and created a new one also, no?

unsupported

and did not try your windows dvd

different OS rules

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