after some tries I got the drive running. But I needed to unplug my hub and then plug it again.
I have added the wait4usbdisks script mentioned in this forum but it seems not to work.
As my drive spins down very early I think doing a USB power down and up and then a mount -a
in a script instead of only waiting for a drive to be online.
What do I need to power up and down the USB bus?
Can I use dbus commands for that?