The disk itself is flexible, hence the floppy disk. In contrast a hard disk had rigid platters, hence hard. The outer casing has nothing to do with it.
The disk itself is flexible, hence the floppy disk. In contrast a hard disk had rigid platters, hence hard. The outer casing has nothing to do with it.
/usr/lib or /usr/lib64 or /lib (some distros) or /lib64
Some things (like hosts file) are in /etc. /etc mostly contains configs.