On Sat, Sep 19, 2015 at 4:09 PM, Bruce Labitt <bruce.lab...@myfairpoint.net>
wrote:

> .   I wanted to copy my data
> from another SDHC card to it.  The card seems to be locked, and is
> preventing writing to the card - although the little slider is set to
> the unlocked position.  Short of returning the card, which may be my
> best option, what can I do to check that the card is actually ok, or my
> laptop's SD card reader is at fault.
>
> I checked the properties of the card - it is set to user -
>


​Check the 'dmesg -T',  'mount', 'hdparm', 'fdisk -l', and
'/var/log/messages'  output for clues. ​

Some distros default fat, vfat, ntfs file-systems to read-only for safety,
don't know if that's your case. Devices also remount r/o on error.  If
'mount' reports 'ro', but no errors listed, a 'mount --options remount,rw'
should work.

Sometimes a specific reader doesn't like a specific card, so try another
one. E.g., my USB hub has slots for everything, but the uSD slot isn't
reliable.



-- 
Bill Ricker
bill.n1...@gmail.com
https://www.linkedin.com/in/n1vux
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