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04/14/2012 08:05:03 AM · #1 |
i have an sd card that that every time i slip into mt card reader windows 7 asks me if i want to scan and fix the card.
it seems to work fine and has for 3 weeks or so, but it has me concerned that it is going to stop working.
is this just a dumb error i keep getting or is there something wrong with the card. i have tried scanning and fixing it and also reformatting in teh camera but i keep getting the error. |
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04/14/2012 03:19:17 PM · #2 |
| Hmm. I have similar problem. I bought a SanDisk 64 Gb SDXC card and a SanDisk 32Gb CF card for my new camera. Thought I would use the SDXC card for the RAW files and the CF card for the jpgs due to their different sizes. But when I put the SDXC card directly into the computer using the built in card reader, it doesn't want to download the files. Putting it into a card reader brings up the message you get, it asks me if I want to format the card. I have swapped which type of files go on which card, and it seems to work. Having said that, my computer is getting on a bit and only has 2Gb of RAM, so that could be the problem.... |
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04/15/2012 09:18:02 AM · #3 |
Okay, I fought this issue for two weeks solid with little help from my retailer but I finally got to the bottom of it all, so please allow me to share what my experience was with the hopes that it may be helpful to you.
I learned that all cards - SD and CF over 32 GB use a special FAT 64 bit files format. It is not compatible with my computers which all use Windows XP, even thought they are all perfectly up to date. I understand that XP can only do 16 bit or 32 bit FAT format and that the latest version of Windows 7 can do 32 bit or 64 bit FAT. My existing card readers all expect 32 bit or less so they are not compatible to the newer cards over 32 GB. I ordered two new card readers from Lexar that have the conversion capability. We will see how well they work once they arrive next week and I will post more. However, my new Nikon D800 camera can correct for the FAT problem when directly connected using the USB 3 cable from the camera to the computer. Older cables will not work even though the USB 3 format connector is backwards compatible. So, for now, I can only access images from the cards using the camera and the USB 3 cable to the computer. Once the new Lexar card readers arrive, I should be able to return to my traditional approach of removing the cards from the camera and uploading from the card reader. This problem should be better documented by Lexar and Nikon. Nikon was of no help at all, which was disappointing since they have historically been great at after sales service. These new high megapixel cameras still need to be better understood.
I hope this information is useful and saves you all the frustration that I went through to get to this point. Now, I need to upgrade all my software applications to accommodate the newer file formats from Nikon and Sony. It never ends...
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04/15/2012 09:30:47 AM · #4 |
Excerpt from Wikipedia (April 15, 2012)
Compatibility with SDHC
SDXC host devices accept all previous families of SD memory cards.[25] Conversely, SDHC host devices will accept SDXC cards that follow Version 3.0, since the interface is identical,[3] but the following issues may affect usability:
SDXC cards are pre-formatted with Microsoft's proprietary and patented exFAT file system, which the host device might not support. Since Microsoft does not publish the specifications of exFAT and its use requires a non-free license, many alternative or older operating systems do not support exFAT for technical or legal reasons. The use of exFAT on some SDXC cards may render SDXC unsuitable as a universal exchange medium, as an SDXC card that uses exFAT would not be usable in all host devices. Since the FAT32 file system supports volumes up to the SDXC's maximum theoretical capacity of 2 TB as well, a user could reformat an SDXC card to use FAT32 for greater portability between computers (see below). FAT32-formatted SDXC cards can be used in a host device built for SDHC if the host device can handle 64GB and larger volumes.
SDHC host devices will not test the new capability bits defined for SDXC 4.0 cards. It will therefore not be able to use the new features of SDXC, such as transfer speeds above UHS104 (104MB/s).
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04/15/2012 12:34:18 PM · #5 |
| Thanks for that update Morgan. I had planned to get a new computer, but some money I was expecting is being delayed, so I only got half of the camera/computer combination. If I get built in card readers I will have to ensure they are up to date. |
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04/15/2012 12:49:29 PM · #6 |
I get asked that by Windows almost every time I insert a card. I think Windows simply sees that it was formatted in another device so wants to "fix" it. I used to let it scan the card, but I now ignore it and have never had a problem.
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04/15/2012 01:57:26 PM · #7 |
The easiest fix for this problem is to get a next generation card reader from your favourite vendor. It needs to be FAT (File Allocation Table) 64 compatible and use USB 3. I have ordered the new reader from Lexar called the LRW307URBNA, which is described as Lexar Professional USB 3.0 Dual-Slot Reader (UDMA 7). It is offered for $59.99 on the Lexar site plus shipping, but can be had at lower costs elsewhere, such as B&H.
Failing that idea, and if you do not wish to spend any money, just use the right cable (USB 3) connected to your camera and ingest images directly into the computer. My camera does the file conversion for me, other cameras may do this as well. Check your manual. The cable was provided with my new Nikon D800.
Again, this challenge is only relevant if you are using cards that are 32 GB or greater. I purchased two 128 GB cards for my new camera and immediately struggled to transfer images from the cards to the computer.
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04/19/2012 09:38:21 AM · #8 |
Originally posted by Morgan:
The easiest fix for this problem is to get a next generation card reader from your favourite vendor. |
Did that today and it works. Don't think I've got the latest card reader - I purchased the Lexar Multi card reader 24 in 1 LRW024URBEU but it dowloaded RAW files from the SD card fine, so problem solved. Thanks for your help!!! |
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04/19/2012 12:12:05 PM · #9 |
as an update i ran the scan and fix the dialog prompts for and this time i checked the box to allow windows fix anything it finds.
the whole thing took about a half hour for my 16gb card and i have yet to see the error again. |
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04/19/2012 12:50:32 PM · #10 |
Honestly,
I've had this message since the day i purchased my card and simply ignored it every time.
No errors yet. No problems yet. Unfortunately, I've suscribed to the "it'll happen if it happens" attitude to this one... |
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04/20/2012 02:40:05 AM · #11 |
| The problem was that I could not ignore the message. It was format the card or cancel. |
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04/20/2012 10:26:49 AM · #12 |
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