Thanks. Did a quick "truncate the zeros" to come up with 7GB, not using exact science...

Anyway, it's obvious I'm no Windows Disk Management proficianado - didn't see the 7GB in the background of the Unallocated Partition snapshot. It's clear to me, now, that pre-allocation of partitions occurs prior to mount-point definition and I'll be sure to make mine around 250GB to 500GB for the tables and partitions I have to deal with.

Cheers. Appreciate the detail you went to in the article.