INF: Message in Errorlog When Physical Dump File Absent

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When you create a disk dump device, the corresponding physical file is not created until you actually dump to it at least once. Before ever dumping to that device, if you try to see what it contains (by clicking the Plus Sign ("+") in front of the dump device name in SQL Enterprise Manager, Server Manager), you will get the following error message in the errorlog:

There is no actual physical file corresponding to the null dump device "diskdump" even after you actually dump to it. If you click the "+" in front of "diskdump," you will get the following message in the errorlog: