Flashing system.img file on JTK1 gets hanged

hi all,

i have similar problem, it gets hanged while flashing the system.img file to JTK1 board.
pls refer the attached screen shot. I am using host as ubuntu 14.04 with virtual box.

Duplicate post of:
https://devtalk.nvidia.com/default/topic/998848/jetson-tk1/brand-new-boards-can-t-flash-system-img/post/5221902/#5221902