Can't locate External Hard Drive in a MAC

Apple Mac os x 10.4 tiger
March 6, 2010 at 13:32:06
Specs: Macintosh
Hello... I can not locate my external hard drive in order
to back up my laptop. I have a Leopard upgrade, but
read that I should back up my computer. (which I
have NEVER done, and I've had it for almost 3 years)
However, when following the instructions I found
online, as to how to back up, I can not locate the
external hard drive anywhere. It does not show up in
disk utilities either. ????

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March 7, 2010 at 10:05:42
You probably need to connect the USB external drive to a different USB port.

The following has some info that applies to PCs and Windows, but the same things apply to using a USB device or a USB external hard drive on any computer.

USB devices may not work correctly when they're connected to certain USB ports. Instructions for how to re-load your USB stack in 2000 or XP, if you need to - similar applies to Vista and Windows 7.

In addition, all external drives connected by USB require that the port (or ports) they connect to can actually supply 500ma of current.

USB external hard drive requirements.

See Response 9:

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March 7, 2010 at 18:38:02
Thank you! Well... It was a cord issue. It is now locating the
hard drive, and I can select it in Disk Utility for back-up.
HOWEVER, now I get and error saying that it is unable to
backup because the "resource is busy!" argh!! I've looked
online to find help... no luck! I tried the "unmount" thing.. then I
couldn't even select it! Any help would be GREATLY

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March 7, 2010 at 20:47:03
I know almost nothing about MAC / Apple operating systems.
One error we don't get, so far as I know, on PCs in Windows is the "resource is busy"

I searched using: unable to backup because the "resource is busy"

And found these:

Scroll down, see the RobLewis post

Scroll down, see the second nickganga post

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