So I got my 1.83 mini today and am setting everything up. I have a 250gb external USB hard drive that I was going to set up with it but when I plug it in nothing happens. I am new to Macs and am not sure what I am doing wrong.
So just to confirm you have connected it to the USB port, connected any required power adaptor and run the Disk Utility application from /Applications/Utilities? I would expect that it shows up in Disk Utility. If it does not then your Mac is basically not recognising it as a disk at all.