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

Frequently asked questions

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.