Windows 10 Boot Camp Error code 0xc0000001 after unsuccessful partition

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Windows 10 Boot Camp Error code 0xc0000001 after unsuccessful partition

I tried to partitions the disks on my 2014 MacBook Air 256 GB, and add 20 GB of space to Windows. I messed up a few times, and had to delete a partition or repartition some stuff a few times, and when I got the right amount of empty space in a partition named "Untitled", I used MiniTool Partition Wizard to try to partition it, but the option was greyed out. I went back to MacOS Sierra and the next time I went onto Windows, It started with "Preparing Automatic Repair" then immediately switched to:

"Recovery

You PC couldn't start properly

After multiple tries, the operating system on your PC failed to start, so it needs to be repaired.

Error code: 0xc0000001

You'll need to use recovery tools. If you don't have any installation media (like a disc or USB device), contact your PC administrator or PC/Device manufacturer.

Press Enter to try again

Press F8 for Startup Settings"

Help?

MacBook Air, Windows 10, Also running Sierra

Posted on May 6, 2017 11:51 AM

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Answer 1

dan.wang.23 Author

Level 1

10 points

May 7, 2017 1:56 PM in response to Loner T

diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *251.0 GB disk0

1: EFI NO NAME 209.7 MB disk0s1

2: Apple_HFS Untitled 1 125.0 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 124.7 GB disk0s4

5: Windows Recovery 471.9 MB disk0s5

diskutil cs list

No CoreStorage logical volume groups found

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Answer 2

dan.wang.23 Author

Level 1

10 points

May 8, 2017 1:17 PM in response to Loner T

sudo gpt -vv -r show /dev/disk0

Password:

gpt show: /dev/disk0: mediasize=251000193024; sectorsize=512; blocks=490234752

gpt show: /dev/disk0: Suspicious MBR at sector 0

gpt show: /dev/disk0: Pri GPT at sector 1

gpt show: /dev/disk0: Sec GPT at sector 490234751

start size index contents

0 1 MBR

1 1 Pri GPT header

2 32 Pri GPT table

34 6

40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

409640 244142264 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

244551904 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

245821440 243490816 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

489312256 921600 5 GPT part - DE94BBA4-06D1-4D40-A16A-BFD50179D6AC

490233856 863

490234719 32 Sec GPT table

490234751 1 Sec GPT header

sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 30515/255/63 [490234752 sectors]

Signature: 0xAA55

Starting Ending

#: id cyl hd sec - cyl hd sec [ start - size]

------------------------------------------------------------------------

1: EE 1023 254 63 - 1023 254 63 [ 1 - 409639] <Unknown ID>

2: AF 1023 254 63 - 1023 254 63 [ 409640 - 244142264] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 244551904 - 1269536] Darwin Boot

4: 0C 1023 254 63 - 1023 254 63 [ 245821440 - 243490816] Win95 FAT32L

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Answer 3

Loner T

Level 9

59,471 points

May 8, 2017 1:27 PM in response to dan.wang.23

You have either El Capitan or Sierra. You will need to disable SIP by booting into Local Recovery (using Command+R - not Internet Recovery) and click on Utilities -> Terminal and type

csrutil status

csrutil disable

csrutil status

Boot normally and check the output of csrutil status which should now be disabled.

Run the following commands (ignore the i386 MBR error but not any others) and test.

sudo fdisk -e /dev/disk0

p

setpid 4

07

flag 4

p

w

y

Reboot and Test Windows.

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Answer 4

Loner T

Level 9

59,471 points

May 6, 2017 1:19 PM in response to dan.wang.23

What is the version of Windows? Please do not use the Mini Partition Tool. It will only cause pain and grief on a Mac.

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Answer 5

dan.wang.23 Author

Level 1

10 points

May 6, 2017 4:58 PM in response to Loner T

I don't know specifically but it's Windows 10. I used the Mini Partition Tool on Windows.

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Answer 6

Loner T

Level 9

59,471 points

May 6, 2017 5:40 PM in response to dan.wang.23

MPT incorrectly manipulates the partition tables on a Mac. It can impact Windows and OS X both. Please post the output of the following OS X Terminal commands.

diskutil list

diskutil cs list

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Answer 7

Loner T

Level 9

59,471 points

May 7, 2017 2:20 PM in response to dan.wang.23

Can you post the output of

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

This will show us the GPT and the MBR and check for discrepancies created by MPT.

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Answer 8

dan.wang.23 Author

Level 1

10 points

May 9, 2017 2:25 PM in response to Loner T

No changes.

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Answer 9

Loner T

Level 9

59,471 points

May 9, 2017 3:10 PM in response to dan.wang.23

Can you post the output of

sudo fdisk /dev/disk0

Since your Mac supports both legacy BIOS and EFI installations, do you recall which type of Windows installation do you have?

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Answer 10

dan.wang.23 Author

Level 1

10 points

May 10, 2017 6:19 PM in response to Loner T

I installed Windows on 8 when it came out, and then got the free Windows 10 update. It's a 2014 Macbook Air. I think it's early.

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Answer 11

Loner T

Level 9

59,471 points

May 10, 2017 7:10 PM in response to dan.wang.23

Can you mount the EFI Partition and check if there is a Microsoft directory in the EFI Partition?

You can use

diskutil mount disk0s1

to mount the partition.

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Answer 12

dan.wang.23 Author

Level 1

10 points

May 11, 2017 12:49 PM in response to Loner T

When I partitioned the disk there was a "Windows Recovery" Partition. That was before I discovered that it broke though. I'll check it soon.

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Answer 13

dan.wang.23 Author

Level 1

10 points

May 11, 2017 1:01 PM in response to Loner T

I went to /Volumes and I see a BOOTCAMP and an Untitled 1 disk.

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Answer 14

Loner T

Level 9

59,471 points

May 11, 2017 6:55 PM in response to dan.wang.23

Due to your partitioning activities, the BCD is no longer valid. To repair the BCD requires information whether it exists in the EFI partition or the Bootcamp partition.

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Answer 15

dan.wang.23 Author

Level 1

10 points

May 12, 2017 1:56 PM in response to Loner T

There is a Microsoft directory there.

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