Many thanks to those who responded with ideas on how to purge protected
files.  Alas, HP's OS is doing a splendid job of protecting itself
(actually, it's protecting us from ourselves).  I've got to give their OS
writers credit ...

I will contact HP support to see if there is another method, but I've
reconciled myself to waiting until 6.0 is installed and I can do a full
re-load.

Again, many thanks.

Steve Douglass
HP Systems Manager
BFGoodrich Aerospace