下载方式：复制链接到迅雷下载

Ubuntu 16.04.6 desktop

下载地址：https://releases.ubuntu.com/16.04.6/ubuntu-16.04.6-desktop-amd64.iso

https://mirrors.cloud.tencent.com/ubuntu-releases/16.04.6/ubuntu-16.04.6-desktop-amd64.iso

Ubuntu 16.04.6 server

下载地址：https://releases.ubuntu.com/16.04.6/ubuntu-16.04.6-server-amd64.iso
https://mirrors.cloud.tencent.com/ubuntu-releases/16.04.6/ubuntu-16.04.6-server-amd64.iso

Ubuntu 18.04.4 desktop

下载地址：https://releases.ubuntu.com/18.04.4/ubuntu-18.04.4-desktop-amd64.iso
https://mirrors.cloud.tencent.com/ubuntu-releases/18.04.4/ubuntu-18.04.4-desktop-amd64.iso

Ubuntu 18.04.4 server

下载地址：https://releases.ubuntu.com/18.04.4/ubuntu-18.04.4-live-server-amd64.iso
https://mirrors.cloud.tencent.com/ubuntu-releases/18.04.4/ubuntu-18.04.4-live-server-amd64.iso

Ubuntu 19.10 desktop

下载地址：https://releases.ubuntu.com/19.10/ubuntu-19.10-desktop-amd64.iso
https://mirrors.cloud.tencent.com/ubuntu-releases/19.10/ubuntu-19.10-desktop-amd64.iso

Ubuntu 19.10 server
https://releases.ubuntu.com/19.10/ubuntu-19.10-live-server-amd64.iso
https://mirrors.cloud.tencent.com/ubuntu-releases/19.10/ubuntu-19.10-live-server-amd64.iso

Ubuntu 20.04 desktop
https://releases.ubuntu.com/20.04/ubuntu-20.04-desktop-amd64.iso
https://mirrors.cloud.tencent.com/ubuntu-releases/20.04/ubuntu-20.04-desktop-amd64.iso

Ubuntu 20.04 server

下载地址：https://releases.ubuntu.com/20.04/ubuntu-20.04-live-server-amd64.iso
https://mirrors.cloud.tencent.com/ubuntu-releases/20.04/ubuntu-20.04-live-server-amd64.iso

Centos 6

下载地址：https://mirrors.tuna.tsinghua.edu.cn/centos/6.10/isos/x86_64/CentOS-6.10-x86_64-LiveDVD.iso
http://mirrors.aliyun.com/centos/6.10/isos/x86_64/CentOS-6.10-x86_64-LiveDVD.iso
http://mirrors.huaweicloud.com/centos/6.10/isos/x86_64/CentOS-6.10-x86_64-LiveDVD.iso

Centos 7

下载地址：http://mirrors.neusoft.edu.cn/centos/7.8.2003/isos/x86_64/CentOS-7-x86_64-DVD-2003.iso
http://mirrors.aliyun.com/centos/7.8.2003/isos/x86_64/CentOS-7-x86_64-DVD-2003.iso
http://mirrors.163.com/centos/7.8.2003/isos/x86_64/CentOS-7-x86_64-DVD-2003.iso

Centos 8

下载地址：http://mirrors.huaweicloud.com/centos/8.2.2004/isos/x86_64/CentOS-8.2.2004-x86_64-minimal.iso
http://mirrors.aliyun.com/centos/8.2.2004/isos/x86_64/CentOS-8.2.2004-x86_64-minimal.iso
http://mirrors.163.com/centos/8.2.2004/isos/x86_64/CentOS-8.2.2004-x86_64-minimal.iso