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I have installed Centos 6 on my new Xen Server (XenServer release 6.2.0-70446c). Everything went smooth. System is working fine but now I want to change boot device on that VM to boot from DVD (iso from nfs storage) But in properties there is only Hard Disk option... I was looking for adding some new DVD device but didn't find where (On Vmware it's very simple and maybe here to but I was searching quite long time and it's became frustrating )... It's strange to me because when I was creating VM for Centos system had to start from DVD and everything went well and without problems but now when I wan't to change boot order I can't (don't know how) enter image description here

What I do wrong ... because I don't believe that it is impossible on Xen. How to accomplish this ?

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I guess your CentOS 6 instance is running in paravirtualized mode and such behavior is just a side effect of it. To access virtual CD/DVD drive, you need to start the instance in recovery mode. From VM menu, select Start/Shut down and Start in recovery mode. This

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