Thanks strypey for suggesting that I revert to Trisquel_7's Live CD or Live
USB stick ...
I have both,so it's just a matter of time before I have the opportunity to
try, after
I locate those items in my cluttered office and hoard of floppies & optical
disks.
It occurs to me that the O/S partition may have gotten full of old Trisquel
upgrades,
but I had assumed that the system upgrade would have cleaned them out ...
maybe not so !
tarting over with Trisquel_7 might get the computer into a functional state,
especially
if the Live Trisquel_7' Gparted lets me reformat the O/S partition.
In a long-ago series of threads, my several D865GLC motherboards gave me
fits, but it
never became necessary to upgrade its BIOS, and my workarounds have worked OK
up to now.
George Langford