Installation CD  [old stable version]

If you are looking for pure installation media for personal computers, even for older i386 systems without PAE extension, download the installation CD below.


Q4OS 1 'Orion' has been superseded by Q4OS 2 'Scorpion', you are recommended to install Scorpion instead. The end of life of 1.x branch is set to May 2020, until then, will continue to be supported.

Live CD  [old stable version]

Live media allow users to get a quick Q4OS experience, or try it out on a real hardware without installation. If satisfied, an optional installer is available.


Q4OS 1 'Orion' has been superseded by Q4OS 2 'Scorpion', you are recommended to install Scorpion instead. The end of life of 1.x branch is set to May 2020, until then, will continue to be supported.

Files details

md5sum ; file:
956c0aaaf938b2bcd4f4e34ad86ae21f q4os-1.8-x64-instcd.r1.iso
b97fb5056ac3621dcb1e8422f32be31e q4os-1.8-i386-instcd.r1.iso
710b54406af094a6047e03b344349dad q4os-1.8-x64-live.r1.iso
c37af295288ffcb04df2916424bec209 q4os-1.8-i686pae-live.r1.iso