Is it posible to install both internal and external(usb) HDD in dm 800s ?

[best ven]

I have a internal hdd on my dm 800s and I want to install a external hdd(usb) but when I want to initiaze I have this message: Unable to initalize harddisk. Error:Mount faild

[nicoshjy]

I have done it in the past using Gemini image.
What image do u use?
BTW when recording u can use only one HHD.

[best ven]

I have done it in the past using Gemini image.
What image do u use?
BTW when recording u can use only one HHD.

Thanks nicoshjy
I use nabilosat at the moment but I have alsow gemini on meoboot and I`ll try it today hope that work