This information is from the Linux.org website the site has information on nearly all Linux distributions.
Now Linux can co-exist with Windows on the same partition and take up less space than your word processor! DragonLinux is a tiny Internet-ready distribution of Linux. At only 20MB installed, it is a fully functional UMSDOS Linux installation complete with networking tools and documentation.
The following information is taken from the Dragon Linux site.
DragonLinux is a complete Linux operating system distribution that has been customized to install on top of versions of Microsoft Windows or any version of DOS. This version is ideal for the new or beginning user who needs to learn, evaluate, teach or demonstrate Linux. Even more advanced users will enjoy the quick install and ability to co-exist with their existing desktop environment.
DragonLinux offers simplicity through ease of installation, minimal initial configuration and no repartitioning of hard drives. Unlike most major Linux distributions, DragonLinux does not require you to risk your data by forcing you to repartition your hard drive.
New in this version of DragonLinux is the Loopback file-system. This allows for installation on Windows and DOS partitions, while utilizing the Native Linux (ext2) file system with almost no performance loss. DragonLinux does not require an extremely powerful system to run.
Recommended system requirements: 486 or Pentium class CPU; 8MB RAM for console, 32-64MB for X-Windows; A FAT16 or FAT32 partition with 50-130 megabytes of hard disk space free for minimal install. DragonLinux is fully compatible with Slackware v7.1 packages, and contains limited support for RPM packages. Other packages are available from both Linux Mafia and the Slackware FTP Site.
After evaluating DragonLinux, customer William Bradley comments: "For the past two years I have been looking at Linux as an alternative to Windows but partitioning my crowded hard drives put me off. The feature of DragonLinux that attracted me was that I did not have to partition my drive to try it out. Once I had it on my system, it installed easily and without any undue effort on my part. I would recommend DragonLinux, without hesitation, to anyone Contemplating making the move to Linux."
DragonLinux v2r1 is based on the Linux Kernel v2.2.16, glibc v2.1.3, and includes X-Windows v3.3.6, the KDE v1.1.2, GNOME v1.2, and Enlightenment v0.16.4 desktops, Netscape Communicator v4.73 and a host of GNU General Public License (GPL) software.