The Steps :
1 - Remix OS 32 bit comes in a zip file. You need to unzip this file to a simple folder on a drive.
2 - In this folder, there are 3 to 4 files. The most important of these are the iso and the usb extract program.
3 - Use the usb extract program to extract the iso to a usb drive.
4 - After the files are extracted to the usb drive by the extract program, copy them to a HDD --including the iso in the simple folder
5 - Use easybsd to point to this iso --now in the HDD with the other files.
Lastly, Take a screen shot of the HDD and post it so I can see if you did it right. Keep me informed and in the loop!
Also is this for legacy boot? If it is then ignore the below.
What I would do is add an efi/boot folder to the directory with the .img's housing a grub.efi and grub.cfg and use EasyUEFI to boot the grub2 directly.
I'd say if it's not picking up the harddrive partition then possibly the grub being used doesn't support either ntfs/gpt/mbr or they haven't been insmod'ed
Here's the grub/grub.cfg I have running phoenixos - modify accordingly and try them: http://forum.xda-developers.com/attachment.php?attachmentid=3643248&d=1455275397