I have external eSATA hard drive which i want to hot-plug into my computer. I enabled AHCI in the BIOS and installed AHCI driver. My motherboard manual says that I need to power down external hard drive before connecting it to eSATA. When I turn the power off, connect eSATA and power back on, Windows does not detect hard drive. But when I connect it with power on it detects it right away. I do not keep external drive on all the time and it is annoying that i need to unplug and plug back in every time I want to write something on it. Also I don't want to damage hard drive buy plugging it in with power on. What am I doing wrong?