Utility

The Utility group is a collection of specialty Boot/repair discs

Hiren's Boot CD - A first aid kit for your computer
Contains all kinds of utilities in these broad categories: Antivirus Tools, Backup Tools, BIOS / CMOS Tools, Browsers / File Managers, Cleaners, Device Driver Tools, Editors / Viewers, FileSystems Tools, Hard Disk Tools, MBR (Master Boot Record) Tools, MS Dos Tools, Network Tools, Optimizers, Other Tools, Partition Tools, Password/Key Tools, Process Tools, Recovery Tools, Registry Tools, Remote Control Tools, Security / Encryption Tools, Startup Tools, System Information, Tools, Testing Tools, Tweakers

Trinity Rescue Kit - CPR for your computer
Trinity Rescue Kit or TRK is a free live Linux distribution that aims specifically at recovery and repair operations on Windows machines, but is equally usable for Linux recovery issues. Since version 3.4 it has an easy to use scrollable text menu that allows anyone who masters a keyboard and some English to perform maintenance and repair on a computer, ranging from password resetting over disk cleanup to virus scanning

Ultimate Boot CD - System Utilities
The Ultimate Boot CD allows you to:
  Run floppy-based diagnostic tools from CDROM drives. More and more PCs are shipped without floppy drives these days, and it is such a royal pain when you need to run diagnostic tools on them.
  Free yourself from the slow loading speed of the floppy drive. Even if you do have a floppy drive, it is still much much faster to run your diagnostic tools from the CDROM drive, rather than wait for the tool to load from the floppy drive.
  Consolidate as many diagnostic tools as possible into one bootable CD. Wouldn't you like to avoid digging into the dusty box to look for the right floppy disk, but simply run them all from a single CD? Then the Ultimate Boot CD is for you!
  Run Ultimate Boot CD from your USB memory stick. A script on the CD prepares your USB memory stick so that it can be used on newer machines that supports booting from USB devices. You can access the same tools as you would from the CD version.

It includes utilities for: BIOS, CPU, Hard Drive: Boot Management; Device Info and Management; Diagnosis; Disk Cloning; Disk Editing; Disk Wiping; Installation; Partition Management, Memory, Peripherals, System

You may also be interested in:
System Rescue CD
Clonezilla CD