pjp wrote:
[...]
Just take the screws off as you see them. Many are torx head so I've
even used a grinder and simply ground them off. I'v even done brute
force with a screwdrive jammed down the side. The thin tin top will give
with enough force. Takes some effort but not usually much.

I've used that method - a screwdriver jammed down the side - on two
drives.

Drilling holes is a little bet more sophisticated, but takes some more
effort, mainly for securing the drive that it doesn't move/rotate during
the drilling.