SD card error

Overview

Cannot write or read SD card.

DJI gimbal, GoPro on FPV, HDZero/Walksnail, microSD V30+.

Symptoms

Typical "SD card error" signs in flight, app or OSD:

• SD card error
• Recording stops mid-flight
• Format failed
• Test record on ground before flight.

Common causes

Before replacing parts, rule out software, mechanical and environmental causes:

• Slow card (not V30/U3)
• Card full or FAT32 limit
• Bad slot contact

Tools needed

Prepare before diagnostics — saves time in the field:

• microSD V30/U3
• Microfiber cloth
• Gimbal guard for transport

Step-by-step fix

Work safely: battery off when working on ESC/motors; props removed; after repair — VLOS test flight.

• Use V30 or faster; format in aircraft.
• Clean slot; try another card.
• If repeats — slot service.

Additional diagnostics

Test record on ground before flight.

Format SD in aircraft, not PC (FAT32/exFAT).

Shutter 2× FPS — reduces jello.

When to contact service

If any of the following apply — do not fly and contact authorised service:

• Gimbal motor overload after calibration.
• Physical SD slot damage.
• Camera won't focus after impact — service.

Prevention

Prevention reduces failure risk and supports EASA Open / VLOS compliance:

• Format before important flight
• Backup cards

Preguntas frecuentes

Is it safe to fly with "SD card error"?

No if the fault affects navigation, power, ESC or link. Fix on the ground first, then conduct a VLOS test flight in open area.

How long does diagnosis take?

Most “SD card error” cases — 15–45 min on the ground. Complex ones (firmware, hardware) may need 1–2 h and service.

Must I register repair with the NAA?

No mandatory repair registration, but a maintenance log is recommended for commercial operations.