Booting Beagleboard xM through USB.

I'm trying to boot my Beagleboard xM from USB OTG. For that purpose, I
remove my SD card, as according to "sys_boot" pin configuration USB
should be the second booting source.

Then I run this program on my host PC:

While the program is running ("." output) I plug 5V power adapter to
my board and then a USB OTG cable to the PC. However, no USB device is

Is it really possible to boot Beagleboard xM from USB OTG?

Thank you.