"Shucking" not "shrugging" 😂
Can I shrug it and use it internally without having to format it?
Not always has some use the external HDD interface sometime partition the data off by a few bytes, Western Digital is famous for that on the element series.
So I would recommend backing up data to another drive or if you can shuck it without being destructive in-case it doesn't work while shucked.
So TLDR 50/50 chance.