How to install RE:O on 3rd party HDD without DMS3

[khafan]

first copy the atad.irx file from game disk to hdd, then open it with hex workshop , goto Edit -> Replace,
set the "type" to "hex values"
Find: D0FFBD2700210400FFFF8430
Replace: 211000000800e00300000000
press ok, in the next window choose "find next" until you reach the 6th entry(the offset for 6th entry is F7C), now choose "replace". save the changes to atad.irx file.

make a iso from game disk with dvd decrypter and open the iso with cdmage(V.1.02.1B5) , browse to folder that atad.irx file is located and right click on atad.irx and select "import file", then browse to place that you saved the patched atad.irx file and replace the file, now exit the cdmage without need to save and burn the iso.

Now you should format the hdd with dms hdd format tool, you can get the tool from dms3.com but you need build a image from the files, here's the image that works for me,
http://www.geocities.com/khafansh3/dmshddformat.zip