possibility of transferring the system in a USB Hard Disk

[TheOldPresbyope]

perhaps @cofot28  believes that  install always happens from sd card ? and is unaware that the downloaded image can be written to sd-card or usb stick or ssd and the Pi booted from any of those for install and subsequent use.?

I must say, it's the first time I can recall that being said in such clear and unambiguous terms.  Are there any steps lurking in the "and the Pi booted from any of those" part.

There's nothing special about the moOde distribution image. It can be installed and run in all the ways the Raspberry Pi OS image can be and with all the same caveats. 

The possibility has been discussed before, cf, http://moodeaudio.org/forum/showthread.p...3#pid24673

It isn't obvious to me that moOde needs a built-in routine to effect this.

Regards,
Kent