You can order dedicated server with OS from this list:

*NIX based OSes

  • Centos 6
  • Centos 6 + SoftRAID1 (mirror)
  • Centos 7
  • Centos 7 + SoftRAID1 (mirror)
  • Debian 7
  • Debian 7 + SoftRAID1 (mirror)
  • Debian 8
  • Debian 8 + SoftRAID1 (mirror)
  • Fedora Server 25.0
  • FreeBSD 10.1
  • FreeBSD 10.3
  • FreeBSD 11.0
  • openSUSE 13.2
  • openSUSE Leap 42.2
  • Proxmox 3
  • Proxmox 4
  • Scientific Linux 6
  • Scientific Linux 7
  • Ubuntu Server 14.04 LTS
  • Ubuntu Server 14.04 LTS + SoftRAID1 (mirror)
  • Ubuntu 14.04 + OwnCloud 8.2.2
  • Ubuntu Server 16.04 LTS
  • Ubuntu Server 16.04 LTS + SoftRAID1 (mirror)
  • Ubuntu Server 16.04 + OwnCloud 9.1.0
  • Ubuntu Server 16.10
  • Ubuntu Server 17.04
  • XenServer 6.5.0
  • XenServer 7.0.0
  • XenServer 7.1.0
  • VMWare ESXi 5.0
  • VMWare ESXi 5.5
  • VMWare ESXi 6.0
  • VMWare ESXi 6.5
  • Windows Servers OS family

  • Windows Server 2012 R2 Standart
  • Windows Server 2012 R2 Datacenter

  • You always can change it on server control panel my.server.lu.
    Also, you can install OS through IPMI on your own.