My favorite recovery disk uses the Slax Linux operating system.  I simply remaster the disk using easy to load utility modules that contain the tools that I like to use for recovering files or operating systems.  Likewise DOS has as many tools available so that you can accomplish the same tasks using DOS utilities.  However the fastest recovery uses imaging tools that can perform a complete system recovery in a few minutes.

There are two imaging tools that I prefer.  The first is North Ghost and the second is a free Open Source utility called Partimage.  Partimage is a Linux tool that can image and restore both FAT32 and NTFS files systems.  Partimage is fast and is a clone of Norton Ghost.  I use Norton Ghost to daily to restore 35 computers in a high school lab.  The high school students have complete admin rights to the computers so that they can complete labs that require them to change the software configuration.  Each morning I am able to refresh the operating systems by restoring using and image on a DOS operating system.  DOS is fast and it only takes about 10 minutes to restore all 35 computers.  I can also restore computers during class if needed to provide a fresh known working configuration.  This helps me keep the computers available for the students 24/7/365 with about 99.9% availability.  I occasionally have a power supply or hard drive failure that takes about 5 minutes to fix.

Sometimes my students ask me why we need to learn DOS.  I tell them that Windows is the problem and DOS can be a great solution.

The FIXMBR website has additional information that you might find useful.