how do I get the hard drive out of the G-Technology casing

I have two old G-Technology external drives that have a thick metal casing. I’ve taken all the screws out and the HD still doesn’t budge. Any suggestions on how to get it out?
Thanks.
Carl S

check that there are no screws hidden under stickers.

there’s a number of youtube disassembly videos, this one in participial shows the hidden screw. once removed, the case slides open easily.

Thanks! Mine’s an even older(!) model, but I think I see where a hidden screw might be…