Roland RG-1F Owner's Manual page 53

Numbers in which no song is saved are shown as "4: (Empty)" in the screen.
fig.d-File-save5.eps
If you attempt to select and save to a number in which a song has already been
saved, the following screen will appear.
fig.d-FILE-Save-c2.eps
If you want to delete the previously saved song and replace it with the current
song, press the [Enter] button.
If you don't want to delete the previously saved song, press the [Exit] button to
cancel the Save operation.
Recording Your Performance
Performance data that was
previously saved to
"Favorites" can be copied to
USB memory, and
performance data that was
saved to USB memory can be
copied to the internal
"Favorites" area (p. 59).
If you want to delete
performance data from
"Favorites" or USB memory,
refer to p. 60.
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