How often do you replace your SD cards?

Started Mar 10, 2018 | Discussions thread
tcg550 Veteran Member • Posts: 8,072
Re: How often do you replace your SD cards?

richj20 wrote:

tcg550 wrote:

What's the purpose of a low level format?

From Canon:

    When the card is formatted or data is erased, only the file management information is changed. The actual data is not completely erased.
  • Be aware of this when selling or discarding the card. When discarding the card, execute low-level formatting or destroy the card physically to prevent the personal data from being leaked.

Canon's version of a low level format takes a few seconds. There is no way it is overwriting data. I would not trust it to make all data inaccessible.  If I had sensitive data on a card that needed to be cleared I would use a program to write the entire disk with 1 and 0s.

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MOD Labe
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