On Tue, 8 Aug 2023 12:52:50 -0700
Samuel Sieb <sam...@sieb.net> wrote:

> On 8/8/23 09:43, Geoffrey Leach wrote:
> > Answers to questions below. FWIW, on both systems a different SD
> > card performs with no problem. That and the error message from
> > e2fsck lead me to suspect that my problem is a bad superblock on
> > the card. I've been unable to find any instructions on how to get
> > e2fsck to mark the current superblock bad and create a new
> > superblock.  
> 
> You can't do that.  The filesystem puts the superblock in a specific 
> position.  If the SD card has a bad block, then it's probably time to 
> toss it.  But you could try copying /dev/zero to the entire card and
> see if it reallocates.

Not good news, but helpful none the less. Thanks.
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