On 23/10/2019 15:14, Knute Johnson wrote:
> You will never wear out a uSD card from writing to it.  From the SanDisk
> SD Card Product Manual.
>
> https://www.manualslib.com/manual/587744/Sandisk-Sdsdb-016g-A11.html
>
>
>> 1.8
>> Endurance
>> SanDisk SD cards have an endurance specification for each sector of
>> 100,000 writes typical

Careful. That document dates from 2004, when single-bit-per-cell devices
were all that was available. The most recent cards are 4-bit-per-cell
and with cell sizes much smaller to increase the capacity per chip. I
believe that around 1000 writes per cell is all that can be expected
nowadays.

However like many others, I have never had an SD card fail. I have one
which has been in constant use for about 4 years as a Pi system disk.
--
Dave

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