Guys I got a problem while doing Usb hostmode

I buyed a USB OTG cable & tried to connect my Mouse to N900 as written in Youtube.. And it Works

And While i try to connect my 160GB HDD to N900 On Clicking VBUS MOD ON a Blue light blinked on HDD & When i clicked on Enumerate A Tick Tick Sound is coming from HDD & No other response.. btw HDD have NTFS Filesystem

So anyone can Help me to connect my HDD to N900 plz...