Re: [gentoo-user] Memory cards and deleting files.

[Dale <rdalek1967@gmail.com>]

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Michael wrote:
> On Sunday, 21 June 2020 00:08:55 BST Wols Lists wrote:
>> On 20/06/20 23:14, Neil Bothwick wrote:
>>> It sounds like it may be filesystem corruption. With an SD card I'd
>>> either reformat it, preferably in the device that will be using it,
>> If that's possible ... :-)
>>
>> I now have two devices, my car radio and a tv, both of which require the
>> vfat filesystem. New cards seem to come with exFAT. And of course
>> neither the radio nor the tv have the option to format a card ... (and
>> Windows has deleted the "format as vfat" option). Thank $DEITY for
>> mkfs.vfat :-)
>>
>> Cheers,
>> Wol
> There may also be a lock switch on the card itself or an SD card adaptor, if 
> connected to the PC using an adaptor, although I expect Dale would have 
> noticed that feature and unlocked it.  Sometimes the lock switch is faulty and 
> will only make contact half way through, switching back to read only at the 
> fully unlocked position - they don't make things as they used to anymore.  :(
>
> Let's not forget corroded electrical contacts - I've had that happen with a 
> USB stick, which accidentally fell in a cup of coffee.  LOL!  The coffee 
> corroded the copper, but the problem only became apparent intermittently a 
> week later.  Cleaning the contacts with fine wire wool and blowing away all 
> swarf followed by a wipe with methylated spirit allowed me to access my files 
> again.
>
> To eliminate PC/adaptor problems, reinsert the card in the camera device it 
> came with and delete/format it there.  If it still doesn't work, RMA it under 
> warranty, or buy a new card, of a different make.  Then tell us all what make/
> model it was, so we can all avoid it!  LOL!
>
> PS. exFAT has made it into the latest Linux kernels.


I did check the lock switch thing, not that I even would lock it.  I'm
certain it hasn't been locked since the cameras can write to them.

Next time I swap cards, I'll reformat them. Give that a try.  The cards
are Sandisk but I've had them a good while.  At times, I've had over a
1,000 images or over a hundred video files on the cards.  One camera
takes pics while the other takes videos. 

Still weird tho. 

Dale

:-)  :-)

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