Yamaha DTX-PRO Reference Manual page 71

MENU Button
5.
Save the file.
5-1.
Press the "SAVE" button ([F3]).
The Save confirmation screen appears.
5-2.
If you wish to save the file, press the "YES" button ([F1]) If you wish to save under a different name, press the "NO" button ([F3])
and the screen returns to step 2.
If a file with the same file name already exists, the overwrite confirmation screen, as shown below, appears.
If you wish to save the file under a different name, press the "NO" button ([F3]) and the screen returns to step 2.
6.
Press the "YES" button ([F1]) to save.
A message shown below appears during the Save process.
Pressing the "CANCEL" button ([F3]) during the Save process stops the process and the screen returns to step 2.
Do not disconnect the USB flash drive from the [USB TO DEVICE] terminal or turn off the power to the DTX-PRO while the file is
being saved. Doing so may cause the DTX-PRO to malfunction, or corrupt memory in the USB flash drive.
"Completed." appears when the Save process is complete, and the screen returns to step 2.
DTX-PRO Reference Manual 71