so, i was fairly certain i got attacked due to looking at what happened to my install partition, but looking at what happened to my data drive just confirms it.
the data corruption appears to have been targeted to the directories where i stored specific pieces of data. i can't read a specific directory, where all kinds of tasty stuff is stored.
rest assured, it is all backed up, repeatedly....except maybe some of the most recent edits to personal files. so, i don't expect to permanently lose too much, even if it is lost. but, i'm going to have to run a chkdsk and hope it's not too garbled because reconstructing the folder could be a pain. and you never know what you forgot until you need it...
right now, it doesn't seem to be finding much, which could be good - it could mean the index file just needs to be rebuilt. and, indeed, it is now telling me it is recovering unindexed files, so i guess i should get these in a found folder - i just hope it's pretty close to what it was initially.
of course, the other option is it runs through silently and recovers empty space, but that doesn't seem to be happening.