It sometimes happens that the flash does not work correctly on some SD memory cards. There can be several reasons for this:

  • The SD card is faulty (old, worn out, etc.).

  • The SD card is not compatible. The Raspberry only works with class 10 SD cards of 16 GB or more.

  • The SD card brand is unreliable.

In this case, the solution is to change the memory card.

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