Partitioning a drive lets you use different file systems on different parts. It also lets you somewhat-better enforce things like: * Setting some data aside a

Partitioning a drive lets you use different file systems on different parts. It also lets you somewhat-better enforce things like: * Setting some data aside as read-only-never-touch-it. * Excluding some files and directories from searching and indexing. although admittedly you don't _have_ to partition for that purpose.