I think this may be related to »[WIN8] Disk check hosed XP drive
I took a disk out of an XP machine and put it in an HP Win8 machine. Only to fined out too late that it loss a couple of gigs of pictures from a folder. I think this is a hint, all the remaining files had a new date of yesterday.
To make it worse, I plugged in an external drive that had a backup and it happened to that as well. These were pictures of my grandson so I had 2 backups.
Not being totally dumb I figured no more win8 for the XP disks. I connected the last one to an OLD XP as external and there they were.
The question is, what's happening. --
"Facts do not cease to exist because they are ignored." - Aldous Huxley