I'm in problems!
Yesterday I bought an HDD, WD 1tb, because I wanted to have Windows in my main hard drive and a second mac OS High Sierra in my new HDD.
I did a partition of the HDD, 500gb and 500gb. One partition to save files and share them between my two operative systems and the another for installing OS X.
When I was installing the mac OS High Sierra I wanted to use the disk utility to format the partition I wanted to use to install it. I selected Mac OS Extended (Journaled) and I tried to format it. Then the disk utility gave me an error saying that something was wrong. I thought: ok, let's try again and reboot the system.
When I rebooted the system, my surprise was that my PC was freezed in the Motherboard's Logo (in my case, Gigabyte) and I couldn't do anything, neither enter the bios nor going to the boot setup.
Now I have opened the PC and I have taken out the new HDD. Without the HDD connected the PC seems well. If I connect again the HDD, the PC gets freezed again in the Motherboard's logo.
What should I do? I'm really worried... I hope my HDD is not broken.
I forgot to say that I have an i7 6700, motherboard Gigabyte Z170-HD3P, Samsung SSD.
please help me in this..I can't install mac os sierra..I downloaded the image in Hackintosh sierra. and made the bootable USB in transmac. but can't boot. the booting is getting stuck with showing "Still waiting for root device"