My raspberry pi is unable to detect my external hard drive, I'm wondering if I might have messed up in my setup.
The hub is connected to the pi in two ways: from the hub to the pi's microusb to give it power and from the pi to the source of the hub so I can connect stuff in the hub. The hub is powered, obviously.
The disk is an external hard drive, powered by usb. It does not have its own power supply. When I connect my disk in the hub, nothing happens. The disk does not start spinning. (It does when I plug it in my laptop).
ls /dev/sd* it does not find the disk.
I'm wondering if this configuration is messed up or if my usb hub does not have enough power for the hard drive or if the external hard drive must have its own power supply (cannot take it from the hub).