Ubuntu 9.04的出現，無數Ubuntu的愛好者都急著更新。Ubuntu 9.04官方正式版放出后，各種Ubuntu 9.04衍生版本也相繼面世。每個版本提供64-Bit，32-Bit和BT，HTTP兩種下載方式。

Ubuntu和Kubuntu的CD版本還提供文字安裝版(Alternative)和LiveCD圖形安裝版(Desktop)兩種安裝方式的光盤下載（僅僅是安裝過程不一樣，裝完後都一樣）。 Ubuntu提供上網本專用版USB安裝鏡像(UNR,Ubuntu Netbook Remix)。 DVD版本包含了兩種安裝模式。 Wubi下載即為Windows下的安裝程序。建議大家：使用P2P下載以減輕官方服務器的負擔。

這裡提供的Ubuntu和Kubuntu的CD均為中國大陸服務器下載鏈接。如需要中國台灣地區的下載地址，請將noncdn.releases.ubuntu.com改為tw.releases.ubuntu.com。
Ubuntu和Kubuntu的CD版沒有完全中文包，請聯網後在線安裝。

-Ubuntu CD(CD)
i386 Desktop HTTP:http://noncdn.releases.ubuntu.com/9.04/ubuntu-9.04-desktop-i386.iso
i386 Desktop BT:http://noncdn.releases.ubuntu.com/9.04/ubuntu-9.04-desktop-i386.iso.torrent
AMD64 Desktop HTTP:http://noncdn.releases.ubuntu.com/9.04/ubuntu-9.04-desktop-amd64.iso
AMD64 Desktop BT:http://noncdn.releases.ubuntu.com/9.04/ubuntu-9.04-desktop-amd64.iso.torrent
i386 Alternate HTTP:http://noncdn.releases.ubuntu.com/9.04/ubuntu-9.04-alternate-i386.iso
i386 Alternate BT:http://noncdn.releases.ubuntu.com/9.04/ubuntu-9.04-alternate-i386.iso.torrent
AMD64 Alternate HTTP:http://noncdn.releases.ubuntu.com/9.04/ubuntu-9.04-alternate-amd64.iso
AMD64 Alternate BT:http://noncdn.releases.ubuntu.com/9.04/ubuntu-9.04-alternate-amd64.iso.torrent
i386 Server HTTP:http://noncdn.releases.ubuntu.com/9.04/ubuntu-9.04-server-i386.iso
i386 Server BT:http://noncdn.releases.ubuntu.com/9.04/ubuntu-9.04-server-i386.iso.torrent
AMD64 Server HTTP:http://noncdn.releases.ubuntu.com/9.04/ubuntu-9.04-server-amd64.iso
AMD64 Server BT:http://noncdn.releases.ubuntu.com/9.04/ubuntu-9.04-server-amd64.iso.torrent
UNR HTTP:http://noncdn.releases.ubuntu.com/9.04/ubuntu-9.04-netbook-remix-i386.img
Wubi:http://noncdn.releases.ubuntu.com/9.04/wubi.exe

-Ubuntu DVD(DVD)
i386 HTTP:http://cdimage.ubuntu.com/dvd/current/jaunty-dvd-i386.iso
AMD64 HTTP:http://cdimage.ubuntu.com/dvd/current/jaunty-dvd-amd64.iso

-Kubuntu CD(KDE桌面,CD)
i386 Desktop HTTP:http://noncdn.releases.ubuntu.com/kubuntu/9.04/kubuntu-9.04-desktop-i386.iso
i386 Desktop BT:http://noncdn.releases.ubuntu.com/kubuntu/9.04/kubuntu-9.04-desktop-i386.iso.torrent
AMD64 Desktop HTTP:http://noncdn.releases.ubuntu.com/kubuntu/9.04/kubuntu-9.04-desktop-amd64.iso
AMD64 Desktop BT:http://noncdn.releases.ubuntu.com/kubuntu/9.04/kubuntu-9.04-desktop-amd64.iso.torrent
i386 Alternate HTTP:http://noncdn.releases.ubuntu.com/kubuntu/9.04/kubuntu-9.04-alternate-i386.iso
i386 Alternate BT:http://noncdn.releases.ubuntu.com/kubuntu/9.04/kubuntu-9.04-alternate-i386.iso.torrent
AMD64 Alternate HTTP:http://noncdn.releases.ubuntu.com/kubuntu/9.04/kubuntu-9.04-alternate-amd64.iso
AMD64 Alternate BT:http://noncdn.releases.ubuntu.com/kubuntu/9.04/kubuntu-9.04-alternate-amd64.iso.torrent

-Kubuntu DVD(KDE桌面,DVD)
i386 HTTP:http://cdimage.ubuntu.com/kubuntu/dvd/current/jaunty-dvd-i386.iso
AMD64 HTTP:http://cdimage.ubuntu.com/kubuntu/dvd/current/jaunty-dvd-amd64.iso

-Xubuntu CD(Xfce桌面,CD)
i386 Desktop HTTP:http://cdimage.ubuntu.com/xubuntu/releases/9.04/release/xubuntu-9.04-desktop-i386.iso
i386 Desktop BT:http://cdimage.ubuntu.com/xubuntu/releases/9.04/release/xubuntu-9.04-desktop-i386.iso.torrent
AMD64 Desktop HTTP:http://cdimage.ubuntu.com/xubuntu/releases/9.04/release/xubuntu-9.04-desktop-amd64.iso
AMD64 Desktop BT:http://cdimage.ubuntu.com/xubuntu/releases/9.04/release/xubuntu-9.04-desktop-amd64.iso.torrent
i386 Alternate HTTP:http://cdimage.ubuntu.com/xubuntu/releases/9.04/release/xubuntu-9.04-alternate-i386.iso
i386 Alternate BT:http://cdimage.ubuntu.com/xubuntu/releases/9.04/release/xubuntu-9.04-alternate-i386.iso.torrent
AMD64 Alternate HTTP:http://cdimage.ubuntu.com/xubuntu/releases/9.04/release/xubuntu-9.04-alternate-amd64.iso
AMD64 Alternate BT:http://cdimage.ubuntu.com/xubuntu/releases/9.04/release/xubuntu-9.04-alternate-amd64.iso.torrent
Source:http://cdimage.ubuntu.com/xubuntu/releases/9.04/release/source/xubuntu-9.04-src-1.iso

-Edubuntu CD(教育版,CD)
i386 HTTP:http://cdimage.ubuntu.com/edubuntu/releases/9.04/release/edubuntu-9.04-addon-i386.iso
i386 BT:http://cdimage.ubuntu.com/edubuntu/releases/9.04/release/edubuntu-9.04-addon-i386.iso.torrent
AMD64 HTTP:http://cdimage.ubuntu.com/edubuntu/releases/9.04/release/edubuntu-9.04-addon-amd64.iso
AMD64 BT:http://cdimage.ubuntu.com/edubuntu/releases/9.04/release/edubuntu-9.04-addon-amd64.iso.torrent
Source:http://cdimage.ubuntu.com/edubuntu/releases/9.04/release/source/edubuntu-9.04-src-1.iso

-Hiweed 2.0 CD(简体中文修改版，CD)
i386 HTTP:
http://www.hatoyu.com/Hiweed-Linux/desktop/
http://mirror.rootguide.org/hiweed-linux/
http://mirror.itbbs.cn/pub/Hiweed-Linux/
ftp://ftp.osuosl.org/pub/hiweed/desktop/
http://ubuntu:ubuntuftp@ftp.ubuntu.org.cn/Hiweed-Linux/

-Mythbuntu CD(媒体中心版,CD)
i386 HTTP:http://cdimage.ubuntu.com/mythbuntu/releases/9.04/release/mythbuntu-9.04-desktop-i386.iso
i386 BT:http://cdimage.ubuntu.com/mythbuntu/releases/9.04/release/mythbuntu-9.04-desktop-i386.iso.torrent
AMD64 HTTP:http://cdimage.ubuntu.com/mythbuntu/releases/9.04/release/mythbuntu-9.04-desktop-amd64.iso
AMD64 BT:http://cdimage.ubuntu.com/mythbuntu/releases/9.04/release/mythbuntu-9.04-desktop-amd64.iso.torrent

-Ubuntu Server CD(服务器版,CD)
i386 HTTP:http://cdimage.ubuntu.com/ubuntu-server/daily/current/jaunty-server-i386.iso
AMD64 HTTP:http://cdimage.ubuntu.com/ubuntu-server/daily/current/jaunty-server-amd64.iso
Source:http://cdimage.ubuntu.com/ubuntu-server/daily/current/source/jaunty-src-1.iso

-Ubuntu Studio DVD(多媒体编辑、图像工作等,DVD)
i386 HTTP:http://cdimage.ubuntu.com/ubuntustudio/releases/9.04/release/ubuntustudio-9.04-alternate-i386.iso
i386 BT:http://cdimage.ubuntu.com/ubuntustudio/releases/9.04/release/ubuntustudio-9.04-alternate-i386.iso.torrent
AMD64 HTTP:http://cdimage.ubuntu.com/ubuntustudio/releases/9.04/release/ubuntustudio-9.04-alternate-amd64.iso
AMD64 BT:http://cdimage.ubuntu.com/ubuntustudio/releases/9.04/release/ubuntustudio-9.04-alternate-amd64.iso.torrent

-Ubuntu-MIDUMPC IMG(小型设备专用)
i386 HTTP:http://cdimage.ubuntu.com/ubuntu-mid/daily-live/current/jaunty-mid-lpia.img