Error allocating [Sierra First install help]

Bello this is my First install with sierra. Followed the guide step by Step. Made bootable USB with unibeast but when i try to execute bootable for First install, It results in this screen with the error.
I have i5 6500
MSI gaming pro carbon
VGA Rx480
HDD barracuda 500Gb (where i want to install)
SSD mx300 Crucial with Windows 10 on it
Barracuda 1TB formatted for Windows use. All SATA connected
Thank you for the help