Here's how to backup your user settings to an SD Card:
Before performing a backup to an SD card for the first time, the SD card must be formatted in the TD-27:
https://www.roland.com/us/support/knowledge_base/360042927411/
1. Turn on the TD-27.
2. Insert the SD Card into the TD-27's card slot.
3. Press the SYSTEM button.
4. Use the cursor buttons to highlight "SD CARD," and then press the ENTER button.
5. Cursor to highlight "SAVE," and then press ENTER - "Save All Data to SD Card." appears in the display.
6. If you want to include any imported samples in the backup, cursor to the "With User Sample" box, and turn the dial to place a check mark in the box.
7. Press the function 5 button (SAVE).
8. Press the function 4 button (NAME), and then use the cursor buttons and the dial to create a name for the back up. **Naming the backup is optional.
9. Press EXIT once after finishing the name.
10. Press function 5 (EXECUTE).
11. Cursor right to select "OK,' and then press ENTER. "Processing" appears briefly in the display.
The backup process is complete when the SD CARD SAVE(BACKUP ALL) menu returns to the display.