windows 10 operating system gives error after I add a new partition

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Level 1

11 points

windows 10 operating system gives error after I add a new partition

Hey guys,

I have got a MacBook Air (13-inch, Early 2015) with processor 1,6 GHz Intel Core i5, memory 8 GB 160MHz DDR3 operating macOS Sierra Version 10.12.3

I have installed and been using Windows 10 on my Mac, however; I added an additional partition and now Windows gives an error and does not start-up. I have read loads of discussions, I have tried the solution that Loner T explained as following:

sudo fdisk -e /dev/disk0

p

setpid 4

07

flag 4

p

write

y

but when I type 'write' and press return key, terminal tells me that "fdisk: /dev/disk0: Operation not permitted"

What can I do about this? Can you please help me?

MacBook Air, macOS Sierra (10.12.3)

Posted on Feb 1, 2017 7:22 AM

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Answer 1

Loner T

Level 9

59,513 points

Feb 8, 2017 8:09 PM in response to Berkusar

Please see https://developer.apple.com/library/content/documentation/Security/Conceptual/Sy stem_Integrity_Protection_Guide/Configur… on how to manage SIP and allow GDisk to complete the write operation.

References -

About System Integrity Protection on your Mac - Apple Support

OS X El Capitan: Protect your Mac from malware

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Answer 2

Apr 8, 2017 7:38 AM in response to Berkusar

Loner T I have a really similar issue but my installation method of windows 10 is different. I started a new thread macOS Sierra w/ Windows 10 - windows won't boot after adding partition if you wouldn't mind helping me out.

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Answer 3

Berkusar Author

Level 1

11 points

Feb 1, 2017 8:48 AM in response to Loner T

diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *121.3 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage Macintosh HD 59.0 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data File Trans 11.2 GB disk0s4

5: Microsoft Basic Data BOOTCAMP 50.1 GB disk0s5

/dev/disk1 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Macintosh HD +58.7 GB disk1

Logical Volume on disk0s2

79211509-BF91-429F-B859-AD3FF73108AC

Unlocked Encrypted

/dev/disk2 (external, physical):

#: TYPE NAME SIZE IDENTIFIER

0: FDisk_partition_scheme *8.0 GB disk2

1: DOS_FAT_32 B 8.0 GB disk2s1

sudo gpt -vv -r show /dev/disk0

Password:

gpt show: /dev/disk0: mediasize=121332826112; sectorsize=512; blocks=236978176

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 236978175

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 115240728 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

115650368 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

116919904 21905824 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

138825728 262144

139087872 97888256 5 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

236976128 2015

236978143 32 Sec GPT table

236978175 1 Sec GPT header

sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 14751/255/63 [236978176 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: AC 1023 254 63 - 1023 254 63 [ 409640 - 115240728] <Unknown ID>

3: AB 1023 254 63 - 1023 254 63 [ 115650368 - 1269536] Darwin Boot

4: 07 1023 254 63 - 1023 254 63 [ 116919904 - 21905824] HPFS/QNX/AUX

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Answer 4

Loner T

Level 9

59,513 points

Feb 1, 2017 9:29 AM in response to Berkusar

Your Mac supports two types of Windows installations - BIOS and EFI. To confirm that it is BIOS, was the output of Fdisk updated by you manually or using the Fdisk is your first attempt to manipulate the MBR? W10 prefers EFI, unless a BIOS W7/W8.1 installation was upgraded to W10.

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Answer 5

Berkusar Author

Level 1

11 points

Feb 1, 2017 1:17 PM in response to Loner T

I used Disk Utility to create a new partition named "File Transfer" to be able to use an accessible partition from both of the operating systems. As soon as I have done this and restarted on windows 10, it gave this error:

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Answer 6

Berkusar Author

Level 1

11 points

Feb 1, 2017 11:15 PM in response to Loner T

sudo fdisk /dev/disk0

Password:

Disk: /dev/disk0 geometry: 14751/255/63 [236978176 sectors]

Signature: 0xAA55

Starting Ending

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

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

1: EE 0 0 2 - 1023 254 63 [ 1 - 115650367] <Unknown ID>

2: AB 1023 254 63 - 1023 254 63 [ 115650368 - 1269536] Darwin Boot

3: 07 1023 254 63 - 1023 254 63 [ 116919904 - 21905824] HPFS/QNX/AUX

*4: 07 1023 254 63 - 1023 254 63 [ 139087872 - 97888256] HPFS/QNX/AUX

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Answer 7

Loner T

Level 9

59,513 points

Feb 5, 2017 9:17 AM in response to Berkusar

This is an expected error. We need to remove the MBR on the disk using GPT Fdisk (aka Gdisk) using the following steps. (Do not enter text like this).

sudo gdisk /dev/disk0

x (experts menu)

n (create a new protective MBR and remove the Hybrid MBR)

o (print the new MBR)

p (print the partition table)

w (write)

y (confirm write)

Reboot and try to install Windows by selecting EFI Boot from the USB.

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Answer 8

Berkusar Author

Level 1

11 points

Feb 5, 2017 7:45 AM in response to Loner T

I get this error message :/

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Answer 9

Loner T

Level 9

59,513 points

Feb 1, 2017 1:27 PM in response to Berkusar

Can you use the steps in Re: [Help] Can't boot to windows (8.1) after resizing partition using GPT Fdisk (aka Gdisk) to re-create the MBR and test?

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Answer 10

Loner T

Level 9

59,513 points

Feb 2, 2017 12:33 PM in response to Berkusar

Is it possible to remove and re-install Windows using EFI Boot so you do not need a Hybrid MBR?

Boot Camp for Mac: Remove Windows from your Mac

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Answer 11

Loner T

Level 9

59,513 points

Feb 5, 2017 5:42 AM in response to Berkusar

Please see Re: Boot camp driving me Crazy! for the steps to build a USB Installer and install using EFI Boot.

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Answer 12

Loner T

Level 9

59,513 points

Feb 1, 2017 8:18 AM in response to Berkusar

Please post the output of

diskutil list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

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Answer 13

Berkusar Author

Level 1

11 points

Feb 1, 2017 9:35 AM in response to Loner T

I installed Windows 10 Home via Boot Camp, then later I upgraded it to Pro. I do not know if it's EFI or BIOS and I do not know how to find which one it is :/

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