Comment by miggol

Good point, considering the nature of floppies I suppose it technically mustn't have been immutable. But I feel like it would have been wise to mount your OS root read-only to prevent yourself from accidentally ruining your (possibly only) copy of your OS. At least before you had a reasonably sized hard drive.

> I'm surprised that, having something immutable, you'd choose to go the other direction.

I can somewhat imagine that having been limited by space and having to swap out disks all the time one would jump on the train of mutability without fully appreciating the benefits of immutability.