cannot launch gdisk on terminal

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. Now test GDisk.

Disable SIP in local recovery.

Hi,

My MBP retina is mid 2014 model, MacOS Sierra 10.12.6. Model identifier 11,3.

I can't use straight Bootcamp so I am using gdisk. This is the error I am getting and any inputs are appreciated.

blue$ sudo gdisk -l /dev/disk0s4

Password:

GPT fdisk (gdisk) version 1.0.3

Problem opening /dev/disk0s4 for reading! Error is 16.

diskutil list

$ diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.3 GB
disk0

1: EFI EFI 209.7 MB
disk0s1

2: Apple_CoreStorage Untitled 380.2 GB
disk0s2

3: Apple_Boot Recovery HD 650.0 MB
disk0s3

4: Microsoft Basic Data BOOTCAMP 119.1 GB
disk0s4

/dev/disk1 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Untitled +379.8 GB
disk1

Logical Volume on disk0s2

6C772FED-CFAC-4206-B520-2E353D584D20

Unencrypted

Please let me know what I need to do next?

Thanks,

SIP has been already disabled before I installed gdisk. I just forgot to paste it here.

What I did is follow these steps:
-Start Bootcamp in Mac OS

-Choose to create windows bootable or start disk and point it to the windows ISO image I have on my HD. By default, the windows support is ticked and cannot be unticked.

-Have a tea and wait to finish

-Boot and press ALT and Choose EFI

-And have more tea while Windows install...

-BE PATIENT IF YOU SEE A BLANK SCREEN, IT WILL EVENTUALLY SHOW THE WINDOWS small circle icons circling as if thinking...

Windows is working now, but every time I boot it goes straight to windows and no option to boot to MAC.

Any suggestions?

So I've been reading through this thread because I've run into a similar issue however my terminal says Error is 1 instead of 2 or anything else

Please start a new discussion to avoid confusion since this is marked as solved. Post the output of the command you run (text output is preferred).

I am having the same issue. I get:

GPT fdisk (gdisk) version 1.0.1

Problem opening /dev/disk0 for reading! Error is 1.

You cannot run GDisk on a disk slice, it must be run on whole disk as

sudo gdisk /dev/disk0

Look at Start up your Mac in Windows or macOS - Apple Support . Are BC drivers installed on the Windows side? Do you have a Bootcamp icon in your System Tray.

Please post the output of

diskutil list

diskutil cs list

What is the year/model of your Mac?

Did Gdisk install properly? If yes, do you see any errors when trying to run the following command?

sudo gdisk -l /dev/disk0