Thank you Merlin_2 for both replies.
The KB article at first glance was all I needed! Unfortunately, not so. First it's for Melinium edition and second I do not have Speed Disk of Norton, only their anti-virus.
What really bothers me is for several years Scan Disk has run routinely (some 4 1/2 million bytes). What has caused this change I wish I knew.
Yes, I'm on W98SE, 192 mb, IEv6; Toshiba Protege 7200CTe laptop.
Cordially, RO