*Help! External HD not mounting.

[jemswillam]

Help! External HD not mounting.
Been using an Iomega 750g minimax HD for back up of photo's, music etc for an old Macbook laptop running OSX 10.4.11 but all of a sudden, it's decided not to mount on the desktop. I think it's just short of 2 years old and wouldn't expect a drive failure at that age. It's making some sort of disk noise, a bit like a stuck record, if that's any help.

The last time it did it, i ran some software called diskwarrior, which seemed to do the trick (it did a rebuild or something like that) but it's not detecting the drive now, so i'm stuck for ideas as what to do next?

Anyone?

[jesalbond]

I solved such an issue with my firewire 800 drives via shutting down the Mac, pulling all cables (power, usb, audio, etc.), waiting for at least 15 seconds (I waited longer), and putting the power cable and keyboard/mouse cable back in.
The start the Mac, and when it finished loading the system try again mounting your drive by putting the cable in.
It's an official procedure from Apple, but I can't seem to find the explanation on their side, the name of it escapes me.