Citrix XEN VM Boot Error code: INVALID_SOURCE Unable to Boot from CD/DVD Read m

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You have installed Citrix Xen Cloud Platform (XCP) and configured it (including network, templates, OS ISO’s etc.; even you have created your first VM with the help of documentation provided by Citrix but when you try to boot your VM for first time it throws following error as Citrix is not able to boot the VM from CD/DVD drives which areattached to it.
[iyunv@xcp1-slave2 iso]# xe vm-start uuid=5ce47d4e-227c-9d1e-4710-21b7c998318e
Error code: INVALID_SOURCE
Error parameters: Unable to access a required file in the specified repository: file:///tmp/cdrom-repo-vIHKIE/install.amd/xen/vmlinuz., ,The problem here is the boot order for the VM is not properly set (through Template) at the time of VM creation and VMremains Halted
　　
[iyunv@xcp1-slave2 ~]# xe vm-list uuid=5ce47d4e-227c-9d1e-4710-21b7c998318e
uuid ( RO) : 5ce47d4e-227c-9d1e-4710-21b7c998318e
name-label ( RW): test
power-state ( RO): haltedTo fix this error first we need to check the boot sequence for the VM. Use following command to check it
[iyunv@xcp1-slave2 iso]# xe vm-param-list uuid=5ce47d4e-227c-9d1e-4710-21b7c998318e | grep HVM-boot
HVM-boot-policy ( RW):
HVM-boot-params (MRW):The above output shows that boot order is not set (“HVM-boot-params (MRW)” is blank) for the VM. Now, execute following command to set boot sequenceof the VM
[iyunv@xcp1-slave2 iso]# xe vm-param-set uuid=5ce47d4e-227c-9d1e-4710-21b7c998318e HVM-boot-policy=”BIOS order” HVM-boot-params:order=”dc”Verify the boot order now.
[iyunv@xcp1-slave2 iso]# xe vm-param-list uuid=5ce47d4e-227c-9d1e-4710-21b7c998318e | grep HVM-boot
HVM-boot-policy ( RW): BIOS order
HVM-boot-params (MRW): order: dcWe can see that boot order (HVM-boot-params (MRW)) is set to “dc” i.e. CD/DVD
Thats it!!! You should able to start the VM and boot it from ISO you have mounted.
[iyunv@xcp1-slave2 iso]# xe vm-list uuid=5ce47d4e-227c-9d1e-4710-21b7c998318e
uuid ( RO) : 5ce47d4e-227c-9d1e-4710-21b7c998318e
name-label ( RW): test
power-state ( RO): running

NOTE: In this post “5ce47d4e-227c-9d1e-4710-21b7c998318e” is the UID of the VM and it will different in your case. So, make sure to change the UID before executing the commands.

Read more: http://eitwebguru.com/citrix-xen-vm-boot-error-code-invalid_source-unable-to-boot-from-cddvd/#ixzz32SWgC8Sn