Yamaha DTX-PRO Reference Manual page 87

MENU Button
4.
Press the "YES" button ([F1]) to format.
Do not disconnect the USB flash drive from the [USB TO DEVICE] terminal or turn off the power to the PRO series modules while
the USB flash drive is being formatted. Doing so may cause the PRO series modules to malfunction, or corrupt memory in the USB
flash drive.
"Completed." appears when the Format process is complete, and the screen returns to step 2.
Memory Info
MENU/File/Memory Info
Description
Shows the memory usage of the USB flash drive.
Free: Free memory space (MB) (free memory space (%))
Free space is displayed in units of MB (megabytes). Also, the free space for the entire memory is displayed as a percentage (%).
Total: Total memory size (MB)
Displays the total memory size in units of MB (megabytes).
Units used to denote capacity change according to memory size (KB: kilobyte, MB: megabyte, GB: gigabyte).
DTX-PRO DTX-PROX Reference Manual 87