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Level 1

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Windows 10 Bootcamp dual boot problem after El Capitan upgrade

Hi guys,

I have an Early 2013 Retina Macbook Pro (2,6 GHz Interl Core i5, (GB DDR3 RAM, 256 GB SSD) computer.

I used OS X Mavericks with Windows 10 Bootcamp and it worked perfectly until I upgraded to OS X El Capitan (I skipped Yosemite).

Now in the boot menu I can see the Windows partition but if I start that I see "Missing operation system" message.

I tried some of the previous discussions:

https://discussions.apple.com/thread/7254934?start=0&tstart=0

https://discussions.apple.com/thread/7200751

http://nerdr.com/bootcamp-partition-lost-repairing-mac-partitions/

but none of them made any result.

I guess I should do some magic with gdisk and the section numbers but I'm not enough by myself to do that, so could you please help me? I can post any result of the gdisk commands to make this work.

Thanks!

Posted on Oct 7, 2015 1:34 PM

63 replies

Loner T

Level 9

59,477 points

Oct 9, 2015 5:39 AM in response to profendre

You may have to run this repeatedly, to get it clean.

profendre Author

Level 1

0 points

Oct 9, 2015 6:43 AM in response to Loner T

Okay, I successfully managed to run sfc scannow and the oiutput is the following:

"Verification 100% complete.

Windows Resource Protection could not perform the requested operation."

Your link says that in this case I should run sfc in safe mode. But I'm running it from an installation drive, so how could I do that? I also checked that the PendingRenames and PendingDeletes folder are exist in the specified folder.

So what to do now?

profendre Author

Level 1

0 points

Oct 9, 2015 7:20 AM in response to profendre

In my case the drives are the following:

C (BootCamp) - existing windows installation

D (WinInstall) - my windows installer pendrive

X: (Boot) - the temporary created boot drive.

I ran c:\>sfc /scannow /offbootdir=x:\ /offwindir=c:\Windows

After a while I was getting this:

"Windows Resource Protection found corrupt files but was unable to fix some o them. Details are included in the CBS.Log windor\Logs\CBS\CBS.log."

I checked the log but I don't know what to do with that.

I tried to manually overwrite winload.exe as your link suggests but it's still can't boot (and still says that \WINDOWS\system32\winload.exe is wrong. ErrorCode:0xc000000e

Loner T

Level 9

59,477 points

Oct 9, 2015 7:26 AM in response to profendre

Can you post error message(s) from CBS.log?

Loner T

Level 9

59,477 points

Oct 9, 2015 10:34 AM in response to profendre

Did you enable read-write for C:? Please see readonly parts in https://technet.microsoft.com/en-us/library/cc766465(v=ws.10).aspx for reference.

profendre Author

Level 1

0 points

Oct 11, 2015 9:00 AM in response to Loner T

After I enabled it I ran sfc again.

Then the output was that it found some corrupted system files but was unabled to fix them, see CBS log.

When I opened CBS log I could not find anything related to my problem. I checked both the X: and the C: drive's CBS log but sfc was not writing anything nor of them.