ALT Workstation K 10.4 ALT is a set of Linux distributions based on Sisyphus, an APT-enabled RPM package repository that aims to achieve feature completeness, usability, and security in a sensible and manageable mixture. PrRescue 0.122 PrRescue is a rescue CD based on Gentoo amd64 supporting nilfs2 and btrfs. Its goal is to always include the newest kernel and Gentoo packages.