Using GPT fdisk utility produces error

Question

I'm trying to install Windows 10 on the following hardware:

• Mac Mini (late 2014)
• Running MacOS High Sierra

I have disabled SIP and confirmed that it is disabled. When I run the command in Terminal: sudo gdisk /dev/disk1 I receive the error:

Problem opening /dev/disk1 for reading! Error is 16.

Does anyone have a solution to this hybrid MBR GUID disk issue which is preventing me from installing Windows 10 on my Mac mini?

Solution

The standard procedure for installing Windows 10 to a Mac Mini (late 2014) is to use the Boot Camp Assistant application. The installation does not require the use of a hybrid MBR GUID disk, so this will not be an issue. The partitioning is taken care of by the Boot Camp Assistant application, so there is no need to use gdisk. The Boot Camp Assistant application has the necessary permissions to modify any partitions protected by System Integrity Protection (SIP), so there is no need for SIP to be disabled.

Comments

[David Anderson]

Do you have a /dev/disk1? In other words, how many drives do you have and which are internal verses external?

[David Anderson]

Why are not you using the Boot Camp Assistant? Why do you need gdisk?

[David Anderson]

Michael: To insure I am notified that you posted a comment, you need to include a @DavidAnderson somewhere in your comment. I had no idea you were trying to contact me.

[Michael]

...and you are right to ask about “disk/disk1” as Boot Camp/Windows Installation will hang up if additional USB drives or disks other than the installation disk are connected. Thanks again!