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Install XEN Server without an Optical Drive


Citrix XenServer is a complete, managed server virtualization platform built on the powerful Xen hypervisor. Xen technology is widely acknowledged as the fastest and most secure virtualization software in the industry.

In case you don’t have any optical drive attached to the server, this small how to will help you to install Xen Server as domain 0 (dom0) using USB flash drive.

  1. Download XEN server iso from
  2. Format your USB drive using FAT32,
  3. Use an older version of UNetbootin to create a bootable disk. Download, start and follow the instruction in user interface,
  4. Just plug the USB flash drive and boot on it to complete the installation of Xen Server.

UNetbootin allows you to create bootable Live USB drives for #Ubuntu, Fedora, and other #Linux distributions without burning a CD. It runs on Windows, #Linux, and Mac OS X. You can either let UNetbootin download one of the many distributions supported out-of-the-box for you, or supply your own #Linux .iso file if you’ve already downloaded one or your preferred distribution isn’t on the list (such as #Ubuntu, Fedora, openSUSE, FreeBSD, PartedMagic)

I used the version 393 and it worked, the latest version (549),  seems to have a bug and refuse to boot with an error message

mboot.c32: not a COM32R image

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