Choose startup disk without key board
I am trying to install win using boot camp, in the process system restart then a message appears that there is no bootable device - insert booth disk and press any key now problem is what II am using non apple USB key board and its not recognize this stage
Now I am not even start OS X ,please belly me how to choose startup disc without key board
Thanks
iMac, OS X Yosemite (10.10)