- Garmin Fleet 790
This message is displayed when there is an issue with the SD card in the device.
- Check that the SD card is inserted securely.
- Remove the SD card and reformat it on your computer, then reinstall.
- If the reformat did not fix the issue, try another SD card in the device. If this solves the issue, the original card was most likely corrupted.
- If the issue persists with the new SD card, contact support for further assistance.
Make sure to check the hidden SD card slot at the base of the device: