How do I

1). Determine the Cluster size of the media on a disk drive?
2). Determine if a Dynamic array has any elements.
Example:

Dim MyArray()
'
x = Ubound(MyArray) ' this will cause an error



'
I have tried IsNull, IsEmpty, Nothing, Null, etc but to no avail.
I hate to depend on error processing to find out. There must be a pleasant way to do this.

John G