1. I create new vm in XO and boot it. I stop it on grub level, then I attach my cd image with cloud-init user, meta and network data in XO, continue with the boot - cloud-init works as expected.

2. I create vm in CLI:

xe vm-install new-name-label=<vm_name> template=Debian10_cloud-init_template
xe vm-cd-add vm=Debian10_cloud-init_template cd-name=nciso11.iso device=4
xe vm-start vm=Debian10_cloud-init_template

and cloud-init does not work, cd is not moutable as it says that there is noting to mount.

Only difference I see is that when I create VM in XO I got two cd devices:

CD 0 VBD:
uuid ( RO)             : 7663f608-efdd-38e0-581a-87d2a21da3fc
    vm-name-label ( RO): Debian_10_cloud_init_template
            empty ( RO): false
       userdevice ( RW): 3

CD 0 VDI:
uuid ( RO)             : 105c96fb-0d1f-4df3-bf6e-e8edf51ee78a
       name-label ( RW): nciso11.iso
    sr-name-label ( RO): ISO's
     virtual-size ( RO): 376832

When I create it in CLI I have 3 fore some reason:

CD 0 VBD:
uuid ( RO)             : 3f18cca9-2630-0e2f-d146-ddd1f716ea65
    vm-name-label ( RO): Debian_10_cloud_init_template
            empty ( RO): false
       userdevice ( RW): 4


CD 0 VDI:
uuid ( RO)             : 105c96fb-0d1f-4df3-bf6e-e8edf51ee78a
       name-label ( RW): nciso11.iso
    sr-name-label ( RO): ISO's
     virtual-size ( RO): 376832


CD 1 VBD:
uuid ( RO)             : d28e5090-4e2c-cbaf-fbab-4ccbdd54c3ca
    vm-name-label ( RO): Debian_10_cloud_init_template
            empty ( RO): true
       userdevice ( RW): 3

... and then coud-init does not work as cd is not mountable - no media (???).

Could someone explain to me why CLI creates additional and empty CD? Thanks!