0xc0000001 at boot - Windows 10

Question

Level 2

227 points

0xc0000001 at boot - Windows 10

I was under the mistaken impression that the system image backup and restore function that comes with Windows would be a good way to backup my partition. Turns out it doesn't play all that nice with at least some dual boot situations. Anyway, I got the restore to go, and straightened up the inconstancies with the partition tables. I have Windows 10 installed.

When I tried to start Windows, it went into an automatic repair loop. I found out how to disable that via bcdedit, but now I get a Blue Screen with a 0xc0000001 at boot.

chkdsk /r c: found some problems, but otherwise didn't help. Tried bootrec, that did nothing. sfc /scannow says something about a pending repair and refuses to run.

I'm not really sure where to proceed from here. The last thing I want to do is reinstall from scratch, since that defeats my purpose of making the system image. First thing I want to do is get sfc /scannow to run, then maybe I can look at replacing corrupted system files, or whatever might be the problem. I saw something about an offline scan for sfc, would that be what I'm looking for?

MacBook Pro (Retina, Mid 2012), OS X El Capitan (10.11.1)

Posted on Nov 3, 2015 3:48 PM

Reply

Answer 1

Sam Wilkins Author

Level 2

227 points

Nov 4, 2015 7:46 PM in response to Loner T

Did that. Now I'm in an endless Automatic Repair loop. The last time that happened, I tried to run sfc /scannow, but it refused to run, saying something about a pending repair.

Is it safe to assume there was nothing wrong with my BCD, and I can restore the backup? Would renaming the bcd.old file back to bcd do the trick?

Reply

Answer 2

Loner T

Level 9

59,536 points

Nov 4, 2015 7:58 PM in response to Sam Wilkins

Put the old BCD back, but you may get the blue screen with this code - 0xc0000001 - again. This is what we are trying to address. The other option is to use bcdedit and see if there is something obvious.

Reply

Answer 3

Sam Wilkins Author

Level 2

227 points

Nov 4, 2015 8:09 PM in response to Loner T

Ok, the old BCD is back, along with the blue screen I was getting earlier. What now?

Reply

Answer 4

Loner T

Level 9

59,536 points

Nov 5, 2015 4:19 AM in response to Sam Wilkins

From NeoSmart WiKi - https://neosmart.net/wiki/0xc0000001/ ....

Here are the steps to run

sfc

at boot:

Boot from the install CD
Select your language, time and keyboard method
Select Repair your computer
Select your operating system when the “System Recovery Options” box appears, but note down the drive’s letter (
```
F:
```
,
```
G:
```
etc.). In our example this will be
```
D:
```
Select Command Prompt
Type the following command with your hard drive’s letter:sfc /scannow /offbootdir=d:\ /offwindir=d:\windows
When scanning is complete, type
```
exit
```
to quit the Command Prompt:exit
Press Enter

Reply

Answer 5

Sam Wilkins Author

Level 2

227 points

Nov 5, 2015 10:59 AM in response to Loner T

Step 4 didn't exactly happen like it said it would, but I'm guessing it's because that was written for Windows 7. I used c: since that's the drive letter for my Windows.

It said it found corrupt files but it was unable to fix some of them, and that details are included in the CBS.Log. It also said that logging is currently not supported in offline servicing scenarios. Which I assume is why when I opened that file, the latest entry is October 17.

What can we do to find out what files need replacing? Is there a third party tool I can use, or some way to clear the flag that says a repair is pending?

Reply

Answer 6

Sam Wilkins Author

Level 2

227 points

Nov 6, 2015 8:37 PM in response to Sam Wilkins

I hope you haven't forgotten about me. I found some stuff about DISM, I'm thinking about trying it. I don't actually have a lot of faith that it will work. I'm mostly here because basically all of the solutions I've found for similar problems apply to Windows 7 or 8, and I'm not sure if I should be trying them with 10. But maybe there's not a whole lot of difference in this area of Windows between recent versions. Please let me know if that's the case.

Reply

Answer 7

Loner T

Level 9

59,536 points

Nov 7, 2015 2:16 PM in response to Sam Wilkins

No I have not forgotten. 😉. You may want to consider a simpler option, that of re-installign Windows on the same partition, which should save your current Windows as Windows.old. It may save you a bit of time and energy.

Reply

Answer 8

Sam Wilkins Author

Level 2

227 points

Nov 9, 2015 4:54 PM in response to Loner T

It looks like the only option I have for re-installing will erase everything on that partition. I think the thing you're talking about requires that Windows will actually boot.

Reply

Answer 9

jndupuis1

Level 2

462 points

Nov 9, 2015 5:08 PM in response to Loner T

Hi LonerT and Sam,

Don't mean to barge in. As LonerT knows I have a Mac Mini late 2012 running Win 10. I got stuck in the endless Windows 10 Repair, fix and reboot, repeat loop as well. It would not go away. and when I finally did get the desktop up, All test were fine until Power up or Restart. Ultimately, the only solution was to Remove Windows 10 and start all over again. Frustrating. El Capitan doesn't make it better, either until they update BCA.

Welcome to the new Windows blue screen of misery then death. 😠

Cheers!!

Reply

Answer 10

Loner T

Level 9

59,536 points

Nov 9, 2015 5:41 PM in response to Sam Wilkins

Can you erase and re-install?

Reply

Answer 11

Sam Wilkins Author

Level 2

227 points

Nov 9, 2015 6:06 PM in response to Loner T

If there is absolutely no way to replace whatever is damaged, I guess. How would I get my files and settings back?

Reply

Answer 12

Loner T

Level 9

59,536 points

Nov 9, 2015 6:11 PM in response to Sam Wilkins

Can you see the BC/Windows volume from the OS X side? If yes, you can copy files, but installed applications recovery may not be possible.

Reply

Answer 13

Sam Wilkins Author

Level 2

227 points

Nov 9, 2015 6:33 PM in response to Loner T

I meant how can I get stuff back from the backup image I already made. Like once I've reinstalled, can I mount the image somehow and then copy files from it?

Reply