MEPIS /ˈmɛpɨs/ is a set of Linux distributions, distributed as Live CDs or DVDs that can be installed onto a hard disk drive.MEPIS was started by Warren Woodford and the eponymous company MEPIS LLC.The most popular MEPIS distribution is SimplyMEPIS, which is based primarily on Debian stable.It can either be installed onto a hard drive or used as a Live DVD, which makes it externally bootable for troubleshooting and repairing many operating systems.