Installing Linux Lite on a USB after an HD installation...

[Scott(0)]

Hello Giuseppe.

Assuming I understand the original problem correctly, try these steps and let me know if they help.

Step 1
Boot your PC with the live usb drive and no additional usb drives attached.

Step 2
Run the command
df -h
and make note of the drives already present

Step 3
Plug in the new usb drive you want to install to

Step 4
Run the command
df -h
and make note of the new usb drive you inserted in step 3

Step 5
Start the LL installation

Step 6
At the screen "Installation Type" choose option "Something else"

Step 7
Recall the name of the new usb drive in Step 4 and choose this drive for the destination
*Important*
Device for bootloader installation must also be set to the same drive destination.