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How to Restore SD Card to Full Capacity

My SD/SDHC/SDXC Card is not showing the correct capacity, how to restore SD card to full capacity?

WARNING: Formatting will erase all data on the card. Back up all your data before proceeding.

Use DiskPart command to restore SD card to full capacity

  1. First of all, Connect your microSD card to your PC using a Fastoe SD Card Reader.
  2. Right-click Start and select Command Prompt (Run as administrator).
  3. Sign in as administrator and type: diskpart to bring up DiskPart.
  4. Type: list disk and hit Enter.
  5. Type: select disk 3 (replace 3 with the disk number of your SD card and hit Enter).
  6. Type: clean and hit Enter.
  7. Type: create partition primary and hit Enter.
  8. Type: active and hit Enter.
  9. Type: format fs=exFAT quick label=FASTOE and hit Enter.
  10. Type: assign and hit Enter.
  11. Type: exit and hit Enter.

A few seconds later, the SD card not showing full capacity issue will be fixed.