It could have developed a fault. To get around it, put the drive in a powered housing. Quite the cheap fix.
Hi, I have an 700 G4 iMac(OS 10.3) with a Western Digital External HD(using USB with own power source).
The other day after I moved my computer and HD in my room, I noticed that all of my USB connected were cut. It was working prior. I found out this was due to the External HD tapping out all of the power. I plugged the HD into an iBook as well as a Dell laptop. It says the USB is drawing too much power and the hub is shutting down.
What is going on here? I've never had this problem with the HD.