Changing USB current limit in BB Black

Just wanted to double check as I bought the BBB to use as a file server. You are all saying it is impossible to power a 2.5" HDD through USB via the BBB with a 5V 2A charger? Many other mini boards can do this so why not the BBB?

USB port is limited to 500mA by the power FET switch. As long as you don’t go too far past that you should be OK.