See “Why are tiny files taking up so much space?
* Most formatting software allows you to assign passwords to each partition. If several people use the same computer, you might put the applications on a large partition, and let each person have a smaller, password-protected partition for their personal files. * If you often need contiguous free space (for a Photoshop scratch disk, for example), you can set aside one partition for that purpose. You can then use your defragmenter on just that one partition. * You can install different versions of the system software on different partitions, and use the Startup Disk control panel to select which partition the computer boots from. This is useful if you have older software that doesn’t work with newer versions of the operating system. * You can install hard drive repair and defragmentation programs on a partition with system software, boot from that partition, and use those utilities to work on other partitions. This beats the heck out of running those programs from boot floppies.
