[dba-Tech] Sticky "ghost" partion on SSD

Hi all

My Kingston SSDNow 64 GB SSD once was restored using Windows Restore in
Hyper-V with a partition of 15 GB.

It was then mounted in my ThinkStation with Win7 which, of course, could see
that partition.
However, it could not erase that partion to create a new of the full
capacity of the drive, ~64 GB.

So I moved the drive to first one (with Hyper-V Server), then another
machine (with Win8) and both could create and view a partion of ~64 GB.

However, when I move the drive back to the ThinkStation, it still believes
the old 15 GB partion is there.
How can I tell the ThinkStation to refresh the partion information?

/gustav