*WARNING: THIS WILL DELETE THE CONTENTS OF YOUR HARD DRIVE. PROCEED WITH CAUTION.*
Steps to install Remix OS EFI Version to HDD
1. Modify syslinux.cfg to allow installation
label ubnentry3
menu label ^Install Remix OS to harddisk
kernel /kernel
append initrd=/initrd.img root=/dev/ram0 androidboot.hardware=remix_x86_64 androidboot.selinux=permissive quiet INSTALL=1 DEBUG=
OR (my preferred method)
Boot into options, highlight resident mode, hit e, add INSTALL=1 to the end of the third line (I believe that's the one. Should look something like the fourth line in the above entry). Hit f10 to start.
2. Go through the installation process to the point where you select a drive/partition and chose the modify option. Select the drive you want to install to.
*Do Not Select GPT!*
Make sure it shows linux, not free space. Once it shows Linux, toggle boot.
3. Format the partition to ext3 or ext4 using the installer.
4. Install GRUB and GRUB2.
5. Enable read-write.
6. DO NOT FORMAT BOOT PARTITION.
7. Once install is done, reboot and remove your USB drive.