ogra@anubis:~/datengrab/kvm$ sudo ubuntu-device-flash core --channel=edge --developer-mode --device=generic_amd64 -o kvm.img rolling
WARNING: this option should only be used to build azure images
Determining oem configuration
Starting download of generic-amd64
41.70 KB / 41.70 KB [============================================================================================================================================================================================================================================================================] 100.00 % 257.12 KB/s 
Done
Fetching information from server...
Downloading and setting up...
39.07 MB / 39.07 MB [============================================================================================================================================================================================================================================================================] 100.00 % 149.98 KB/s 
77.21 MB / 77.21 MB [============================================================================================================================================================================================================================================================================] 100.00 % 223.79 KB/s 
Installing generic-amd64
Starting download of generic-amd64
41.70 KB / 41.70 KB [============================================================================================================================================================================================================================================================================] 100.00 % 256.65 KB/s 
Done
Enabling developer mode...
New image complete
Summary:
 Output: kvm.img
 Architecture: amd64
 Channel: edge
 Version: 102
ogra@anubis:~/datengrab/kvm$