That worked well. Tried several shutdowns and restarts. No errors
For the record
libpng error: read error - kept repeating itself
tried: ctrl alt del
response: INIT: sending process to the TERM signal
response: could not log bootup address already in use
response: libpng error - keeps repeating.
tried F6 at shutdown
response: same png error sequence
ctrl alt del
response: restarting system successful.
Quite the experience. All is well. System is somewhat slower at boot, but no hard reset linux heart attacks. Have no clue what a "plymouth" is or does.
I truly appreciate the support.
Thank You all.