UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions.

 
 
LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #1   Report Post  
John Stumbles
 
Posts: n/a
Default How to tell if CF card is faulty?

[crossposted to comp.os.linux.misc as well as *.photo.* groups because I
know there'll be people there clued up about comp systems, and uk.d-i-y for
folks clued up about life the universe and everything :-)]

I have a 128M CF card which has recently started playing up in my digicam
(Nikon Coolpix 3100 fwiw). After taking a lot of pictures the camera
suddenly reports that the card is not formatted. I can recover the pictures
from the card (using various commercial utilities, or dd-ing to an image and
pulling out chunks starting with the jpeg header from the image file). When
I do this usually some of the later images are corrupt: typically they will
display OK in a thumbnail view but attempting to view at full size the whole
image is momentarily displayed at reduced resolution but then a portion of
the image (starting at the left side) is replaced by blank or garbage as the
veiwer attempts to display it at full resolution. (I guess this is related
to the format of jpeg images?)

Anyway I can reformat the card and it works OK, but the problem recurs.
Sometimes when recovering images I find I still have images from earlier
shoots 'further down' the card, suggesting that the card isn't failing at
some particular memory location but more-or-less randomly. I have a
'reference' duff CF card :-) which the camera (and PC via card reader)
report as unformatted even after a format and this card isn't showing that
symptom, but the repeated occurrences of the problem and the fact I don't
get any problems on another CF card (though that is only 32Mb) suggests that
it's the card at fault rather than the camera.

Is there any way of testing to be sure, using what I have he the camera
itself, a usb card reader, linux and win2k systems, some loo rolls and
sticky-back plastic ... :-) ?


 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Faulty RCD cable reel Lurch UK diy 10 May 25th 04 12:15 AM
Very OT - recovering data from a Compact Flash card David W.E. Roberts UK diy 17 May 10th 04 10:29 PM
Faulty wallpapering update! Jim S UK diy 3 April 3rd 04 10:39 PM
Faulty wallpering- update!! Jim S UK diy 3 March 31st 04 11:04 PM
anyone know how to diagnose a faulty Choke / Ballast in fluorescent light circuit nick UK diy 14 July 7th 03 02:01 PM


All times are GMT +1. The time now is 01:25 AM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 DIYbanter.
The comments are property of their posters.
 

About Us

"It's about DIY & home improvement"