The fact you still can't get it to work correctly leads me to believe the issue is also within the HD's firmware and/or this given HD does not have an active thermal sensor that meets Apples spec.
+
Just to be clear here both HD's are Western Digital and are the same series and size that you are exchanging out correct?
+
+
If so, the fact you still can't get it to work correctly leads me to believe the issue is also within the HD's firmware and/or this given HD does not have an active thermal sensor that meets Apples spec.
FYI - Did you contact Apple to see if the HD was covered under warranty? They had a bad batch of HD's in some systems and these systems have an extended warranty (call them with your systems S/N). If it was not covered by Apple you could also go directly to WD as they have a warranty program for there drives even if it was an OEM drive, that might get you a free replacement HD (http://support.wdc.com/warranty/index_end.asp?lang=en)
The fact you still can't get it to work correctly leads me to believe the issue is also within the HD's firmware and/or this given HD does not have an active thermal sensor that meets Apples spec.
FYI - Did you contact Apple to see if the HD was covered under warranty? They had a bad batch of HD's in some systems and these systems have an extended warranty (call them with your systems S/N). If it was not covered by Apple you could also go directly to WD as they have a warranty program for there drives even if it was an OEM drive, that might get you a free replacement HD (http://support.wdc.com/warranty/index_end.asp?lang=en)