Updated to OS LION and can't acces my HD

[relaxnow]

Hi There,
Recently opgraded my OS to Lion I'm on a Mac book pro and can not access my external HD now the model number og my HD is PHR-100AC. IS there a driver update or something for this model?
I tried one update from WD but it didn't correct the problem.
thank you!

 

[DeltaMac]

If you don't mind, I like to start with the simple questions
Is your external hard drive plugged in, and powered ON?
Which interface are you using - USB, or Firewire?
You cannot use both, so make sure that only one is connected...
Check in your Disk Utility. Does your Macally drive appear on the list there?
If it shows there, select that drive, by clicking on it, then click the Repair Disk button (different from Repair Disk Permissions)
What is the result?

 

[fryke]

Haven't heard about problems of external drives specifically with Lion, so I'd say it's either a cable, the power supply or the harddrive itself at fault.