[GLLUG] Unexplained problems

James Courtier-Dutton james.dutton at gmail.com
Tue Apr 30 13:48:46 UTC 2019

On Tue, 30 Apr 2019 at 13:38, Chris Bell via GLLUG <gllug at mailman.lug.org.uk>

> Hello,
> Two of four PaspberryPi 2B computers appeared to have gained file problems
> within 24 hours, while there have been no problems with RaspberryPi 3B and
> 3B+
> devices alongside, so I tried to install the latest Raspbian software to
> some
> MicroSD cards. The first two had been used before, but thought to be good,
> but
> neither managed to start a RaspberryPi. Thinking that they may have been
> corrupted I attempted to re-install the same version of Raspbian, but dd
> now
> reports that both are read only. I have tried several MicroSD to SD
> adapters,
> none of them is set to write protect, but both MicroSD cards now show as
> write
> protected. I then tried a new MicroSD card. It appeared to accept the file
> system from dd, but now shows empty and again shows as write protected.
What does this report for the sd card:

hdparm -r /dev/sdb       (where sdb is changed to match your sd card's

hdparm -r /dev/whatEverYourIs

 readonly      =  0 (off)

If yours says "1"

hdparm -r 0 /dev/whatEverYoursIs
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