Hi Paul,
thanks for your answer.
You are right, the thread of 'charlesdh' is not to the problem...

But I was afraid, that there is no direct way to do this.
The next idea is:
How is the menu called which shows if you use the right mousebutton on a recentfiles name?
Eventually you could add an item to this menu where you could ask if the drive is actual yet.
(Excuse my English, I'm from Austria...)
Regards
Dietrich