I'm trying to deal with small Torx screws on a drive case. They're
about T8, maybe T7. Tough to tell cause the screws are
'pre-stripped.' In other words, there's not much edge for a Torx
driver to grip them. They almost look like rounded allen-head screws.
I'm trying to figure out how to deal with them.

These are not the tamper-proof variety, so I don't need a hollow-point
Torx driver (if they even make them that small).

The first thing that occurred to me was to place a small Torx driver
in the holes and tap the end lightly with a mallet. That could do
more harm than good though, as this looks like very soft metal. It's
also a working disk drive case, so I don't want to damage the drive.

I could try a tiny screw extractor, but the risk is that it wouldn't
work and then the remainder of the screw would really jam things up.

Any other ideas?