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SDHC card problem
#1
Posted 25 April 2017 - 02:24 AM
#3
Posted 25 April 2017 - 05:27 AM
Yes, I have formatted the card in the camera.
I keep images on the camera because I need access to them when out and about.
#4
Posted 25 April 2017 - 09:05 AM
While you could format the card, the card is correctly recognized by your camera.
Also the message "Memory card contains no images" is not an error, but an informal message.
Try taking one or more photos with the new card in and this message will disappear.
#5
Posted 25 April 2017 - 02:54 PM
OK, I've taken a couple of photos. They are the only ones I can see.
I have copied (maintaining the original folders structure) all the original photos from the 4Gb memory card to the computer and then on to the the 8Gb memory card where they can be viewed but NOT when the memory card is in the camera.
This does not seem logical!
#6
Posted 25 April 2017 - 08:57 PM
There is a checksum in each jpeg that is generated from several parameters, one of which is the exact memory address the file is written to on capture. This will read as a fault on the card by the camera if a file is changed in any way outside the camera's control and the camera will not display it. Any disk operating system will ignore that information, which is why the photos can be viewed on a computer or tablet. The way you want to use your camera is too far outside the box for the Nikon engineers to even consider programming a more complex file viewer.
#8
Posted 26 April 2017 - 03:06 AM
Thanks.
As an aside to the main query what is the difference between formatting the card whilst in the camera and in a card reader connected to the computer? Surely a FAT32 format should be the same whatever?
#10
Posted 26 April 2017 - 06:02 AM
Thanks for that.
Up to now I have looked at trying to resolve technical aspects as I see and understand them. Perhaps I should have kept it simple. How do I transfer files and folders from one SDHC card to another SDHC card and for that card to be usable in my camera? A step-by-step guide would be most useful.
Thanks.
#11
Posted 26 April 2017 - 06:05 AM
#12
Posted 26 April 2017 - 07:01 AM
Just a thought. Would a copy from SDHC to SDHC (both in card readers) do the trick?
Just another thought. Is there any software which would 'clone' (everything) from SDHC to SDHC? That may get around the issue you outlined in your message at 03:57
Apologies for being pedantic.
#13
Posted 26 April 2017 - 07:02 AM
There is no difference between card to card and using the hard drive as an intermediate. It still won't copy every bit to exactly the same sectors on the new card.
Cloning to an identical card *might work* but the chance of it working with cards of different size is very small.
#14
Posted 29 April 2017 - 08:47 AM
#15
Posted 29 April 2017 - 03:33 PM
http://cdn-10.nikon-...2/L22L21_EN.pdf
Says indeed at page 110 that 8GB SDHC cards are approved from
SanDisk, Toshiba, Panasonic and Lexar. The 16GB card is however not approved from Lexar.
This being said, what I would like to reconfirm is that according to previous postings you have already succeeded in formatting the card (post #3 in this thread).
#16
Posted 30 April 2017 - 12:30 PM
I would look to see if there was a firmware update available for the camera. Also- check that the drivers on your computer have not gone bad, the camera should be able to communicate with it.
What you are doing by copying the files to a new, larger capacity card is "fooling the camera's firmware". It may or may not work, it may work for a while, it might cause side-effects after continued use causing data to get lost. This is not a procedure that is in the manual, and the firmware may not account for the difference in card-capacity after the directory files have been over-written.
On my Ricoh RX-1: I was able to format an 8GByte card in the camera and copy all the files from the 4GByte card I normally use to it. The camera could view the images on the 8GByte card, and even registered the additional space as being available. BUT: I would not use it for any photos that I care to retain. Too many variables, and I don't have the documentation for the inner workings of the camera. Without that detailed knowledge, you have no way of insuring data integrity.
#17
Posted 03 May 2017 - 03:42 AM
Thanks.
Nikon does not give the version number of the latest firmware. I could download it anyway just in case - but how do I get it onto the camera?
Similarly with drivers I could download and install anyway just in case.
You say "the firmware may not account for the difference in card-capacity after the directory files have been over-written."
This sounds as though the camera will work ONLY with the card (or at least one of the same capacity) that was in it when FIRST used. That is born out by the fact that it is resolutely refusing to acknowledge any card of a higher capacity. Is it possible to trick it into 'thinking' it has just come from the shop and doesn't yet have a card so will accept the 8Gb card? Is the file NIKON0001.DSC anything to do with this?
#18
Posted 03 May 2017 - 04:45 AM
The firmware should be able to use larger cards than the very first one used with it. It will have an upper limit as set by the current firmware version. Most cameras have a way of checking the firmware version of the camera via the menu. Check the manual for loading firmware: some require a connection to the computer, some require that the Firmware File be moved to the SD card.
I'm not sure what is in the ".DSC" file, but several cameras use files such as this to control how data is written to the card.
#19
Posted 03 May 2017 - 10:47 AM
I would suggest there are many better ways to have the photos handy than worrying about a difficult (if not impossible) option of trying to get the camera to recognize images in places it did not put them. Since you already have the images on your computer, transfer them to your phone or tablet and they will be easy to share with others any time you want to. Bonus is that both of those probably have better screens for viewing images than the camera. You can also choose which images (including all of them) you want copied.
- Dogbytes likes this
#20
Posted 03 May 2017 - 05:39 PM
At least on the older Coolpix L10 the Card ID is a field stored in file "transmrk.njb" in the MISC folder, part of the card format process. The nikon001.dsc is a hidden file, and has nothing but '20'x in it: ASCII Spaces when created, 512 bytes. I used DOS command "attrib -s -h -r" to make it visible. I'll bet they change as the card fills up, some sort of marker. Embedded systems play tricks like this. It's just not possible to state what exactly will happen when these files are altered. I only fired off 3 test shots with the camera, it is very power hungry and wants expensive Lithium batteries to run. I used a computer running DOS to HEX dump the files. You would not believe what it takes these days to make a computer run DOS on a 512GByte SATA drive...and not phony DOS, REAL mode DOS with no WINdoze..
Also tagged with one or more of these keywords: coolpix, l22, sdhc, memory contains no image, transfer to new card
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