Puppy Linux is designed as a very small Linux distro to run on old hardware, or other low power machines. Usually based on Slackware, the new release of 5.4 now comes in two flavours, including an all new Ubuntu 12.04 spin of the distro. Named Slacko and Precise for the Slackware and Ubuntu versions respectively, the image size for both of them is just under 160 MB, giving neither a clear advantage size wise out the gate. For both of them though, being able to stay at this sub 160 MB size is pretty fantastic for what is basically a fully functional operating system.
As live discs, they come with a lot of default applications, enough to get you working from the base system. As they load directly into RAM, the OS is very fast, even on older systems. First time use on a system allows you to make some initial tweaks – time zone, language, keyboard layout, resolution, etc. Although basically the same screen, Slacko’s works just a bit better, with the Xorg wizard to make some advanced adjustments to the display seemingly not working on Precise.
rest here