Does OS X corrupt files when copying from SD card to desktop?

Using finder to copy a folder and its files from SD card to mac desktop seems to cause *some* files to be corrupted, specifically a handful of MP4 files from a FAT32 SD card  which was used in a digital camera. Using a binary/hex comparison tool reveals that some segments of the files contents were modified when copied from the SD card. 
This error occurs when copying multiple files using Finder windows.  However, when copying the same files one at a time, the corruption does not occur.  This appears to be an OS level bug.  In reviewing past content, I found that dozens of MP4 files have been corrupted in the past 4 months by merely copying the files from the SD card to mac desktop using Finder copy/paste.
I am using OS X Mountain Lion 10.8.3

Well, like I said, the byte size in fact did *not* change.  So I'm not even concerned about that.  What *did* change is the content of those bytes and it doesn't matter what operating system you are using, the content of those bytes is *not* supposed to change.
Also, like I said before, if I copy the individual file (MP4) insead of the entire folder, and then do the binary/hex comparison, the byte data is identical. i.e.
a) copying one file at a time produces an *identical* file on the HD, i.e. the byte count AND the byte content are precisely the same.
b) copying a folder with multiple files produces a *different* file on the HD, i.e. the byte count is the same BUT the byte content differs from the original file.

Similar Messages

  • RAW format files wont copy from SD card

    Im copying my wedding photos from the SD Card, all the JPEG pictures are transferring as normal but the RAW format pictures we took wont copy over.
    Thankyou

    Is your camera RAW supported? http://support.apple.com/kb/HT3825
    LN

  • When my new MacBookPro/Lion awakes from sleep I get network Diagnostics telling me I'm not connected to the internet. After I step through ND it says connection is fine and I can connect. software bug? Corrupted file carried forward from my old Mac?

    When my brand new MacBookPro awakes from sleep it has lost its internet connection. It goes to Network Diagnostics and I need to step through all the pages to get to the end where it says connection is o.k. Is this a bug in Lion or could it be a corrupt file migrated over from my old MacBook Pro which would frequently lose its Airport connection and couldn't be reconnected until it cooled down. (This one always shows full bars on the Airport indicator).

    That's definitely just paranoia.  First, because in sleep mode, there's no internet connection.  The computer might as well be turned off as far as the network is concerned, and there's no activity in the computer other than a bare trickle of electricity to maintain the RAM.  The processor is doing nothing.
    Second, Macs are quite difficult to hack, and if you're on a wireless network, the wireless router protects you from incoming attacks from the outside world.
    Of course, you should be able to leave Safari open with no open windows and not affect your ability to get online when it wakes up.  If you can reproduce that reliably, and if I can as well (haven't had a chance to try it yet), then it should be reported to Apple.

  • P55GD80 slowdown when copying from DVD SATA drive.

    I had an issue with my system becoming unresponsive after copying files from a DVD drive to my secondary data drive. I have the specs below:
    P55GD80 (Bios 1.5)
    Core i7-860
    Intel X-25M 80GB SSD (Boot Drive)
    Seagate 7200.10 320GB (Data Drive)
    DVD-ROM
    DVD-RW
    4 GB Gskill memory
    Windows 7 Ultimate 64bit.
    My initial setup had all of the drives on the Intel SATA 1-6 connections. I first noticed an issue when copying files from either of the DVD drives to my secondary data drive. My whole system would slow to a crawl. After many different combinations, I found the best performance by moving my secondary data drive to the SATA 7/8 Jmicron controller. It does not make sense why I needed to do this. Any ideas? I did not notice an issue when copying from the SSD to the data drive, but then again, I rarely do that.
    Do I need to enable AHCI for the Intel controller? If so, how do I do that. When I went into the BIOS there only seemed to be an option for this for the Jmicron controller. When I enabled this, the system suddenly did not see any other drive besides the one connected to the Sata 7/8.
    Also, why when I hook up the two DVD drives to SATA 7/8 (JMicron) will the BIOS see both drives, but Windows 7 sees only 1? Does JMicron only operate in RAID?

    Thanks guys, I figured it out. I had two problems really. When I went to turn on AHCI the first time, I already had my secondary data drive connected to the SATA 7/8 port, which messed everything up and made me think I wasn't turning AHCI on for the right controller. Turns out I was, but I had to move all of my drives back to the Intel SATA 1 through 6 ports. Once I did that, everything was detected properly, but then my second problem was needing that registry key change which I had no idea was necessary. I would like to think I am pretty technical, but I am obviously a noob to system building since I had never heard of AHCI.

  • File when copied , is having the current timestamp instead of original time

    Hello,
    I am copying a file file-1(x-date) from server-A to Server-B. when the file-1 is copied to server-b, the size and everything remains fine but the timestamp changes to current timestamp.(Y-DATE)
    my issue : I want to the file when copied to have original time-stamp(X-DATE)
    any idea why this is happening ???
    Thanks

    BigDaddyLoveHandles wrote:
    Skotty wrote:
    You might not think that you could set the last modified date manaully, but alas, you can:
    [http://java.sun.com/j2se/1.4.2/docs/api/java/io/File.html#setLastModified(long)]
    Oh lackaday! Why "alas"?It's suuuuuch a hassle!

  • Error message when copying from Acrobat Reader

    Error message when copying from Acrobat Reader - any file,  any time (Win 7, Adobe many versions until recent).
    Copy works, but causes a needless and useless error message that has to be clicked away every time.
    This problem is published on the web for a million times without a working solution. And even in the Adobe forum no qualified answer (http://forums.adobe.com/thread/441370)
    When can I expect a solution?

    "101 Views     0 Replies  
    Was this helpful?" 
    Of course not.
    But thank you anyway, I talked to my admin and we changed the whole company to Foxit.
    It can be that easy.

  • Why do colors slightly change when copying from Illustrator to Photoshop?

    I want to copy a object from Illustrator and paste it into a Photoshop document with the same color mode and profile.
    When I use the Eyedropper Tool on the pasted object in Photoshop the color seems to be slightly off.
    Both the Illustrator and the Photoshop document have their Color Mode set to RGB
    Both Applications are using synchronized color settings.
    This also happens when the object is dragged or Placed. It does not happen when copying from Photoshop to Illustrator.
    Could there be a problem with my color management settings? What actually happens to the color information, when it is copied from one application to another?
    Thanks for any help.

    Why the heck are people still using these nonsensical hexadecimal HTML numbers?
    Since some decades we got used to describe RGB values by decimal numbers 0...255.
    Both your value sets are practically the same, but how they were converted from one
    to the other, that requires an investigation, how Adobe workflows are distributed
    between California and Bangalore.
    Best regards --Gernot Hoffmann

  • Photoshop Elements 9 won't open blank files or copy from clipboard

    PE9 for Macwon't open blank files or "copy from clipboard."  I get error messages that say, "Could not complete the command because of a problem using the Adobe color engine," when I try to create a new blank file, and "Could not place because of a program error" when trying to "copy from clipboard."  I tried reinstalling the software, but that didn't help.

    Are you still facing the same problem ?
    can you try it after resetting your preferences.
    To reset your preferences at the time of launching PSE press command+option+shift key combination untill following pop up comes.
    Addi

  • Can't change quantity when copy from Sale order for Delivery

    Hi all!
    Can i use authorization for can't change quantity when copy from Sale order for Delivery.

    Tien,
    Approval will not work when you have mutiple rows of data.  You would have to work with SP Transaction Notification
    There has been threads before on the forum on the same topics.
    Block the Quantity in Sales Delivery
    Approval Procedure for chaning quantity in Delivery Document
    Suda

  • How can I get my itunes onto my new laptop? Do I need to download itunes again or can I just copy it? My ipod classic has since been soaked in water and does not work so I cannot copy from there. Can anyone help?

    How can I get my itunes onto my new laptop? Do I need to download itunes again or can I just copy it? My ipod classic has since been soaked in water and does not work so I cannot copy from there. Can anyone help?

    You should copy everything from your old comptuer to your new one.

  • HT1386 My computer was stolen with all my iTunes on it. However, my iPod was not stolen. How do I transfer all files from my iPod to my new computer (purchased files and files I copied from CDs)?

    My computer was stolen with all my iTunes on it. However, my iPod was not stolen. How do I transfer all files from my iPod to my new computer (purchased files and files I copied from CDs)?

    http://www.wideanglesoftware.com/touchcopy/index.php

  • Is there a way to control the quality of my pdf file when exporting from a .pse file?

    Is there a way to control the quality of my pdf file when exporting from a .pse file?
    Hi,
    I have 2 pages in all in a .PSE file.
    When I try to export it as .PDF, the quality is very poor. I cannot change it to a better quality.
    Please advise how I can export the file so that i can have better quality.

    Rik Ramsay wrote:
    To expand a little on what Jongware said, normally choosing vector over bitmap will decrease the filesize. If the vector art is very complex though, this will not be true.
    Yup, a logo as bitmap takes up more space than the same as a vector -- unless the vector image is bitmap heavy (think Drop Shadow, Outline Glow; these are actually bitmap effects).
    Also, check your PDF version. "Older" versions do not support live transparency, the latest do. Then again, you cannot use live transparency if you suspect your viewers may be using Mac OS X, because Apple's own PDF viewer sucks big time.

  • Photos sent to file on desktop when importing from memory card

    The photos sent to a file when importing from a memory card appear in the file as Adobe documents and cannot be opened.  If I try to open a message appears 'Adobe Reader cannot open this document as it is not a supported file/
    What has gone wrong?

    You have already opened a thread on this issue, we don't need a second thread on the same issue.

  • Firefox does not appear on screen when started from the start menu, but task manager says the process is running

    Firefox does not appear on screen when started from the start menu or the shortcuts, but task manager says the process is running.

    No - I get the message basically saying "Can't run program while Firefox is running. Please close down Firefox & try again".
    I rebooted my computer and it all works now - but that's weird it was happening before. Kinda weirded out that it happened at all.
    To avoid that happening again, I still wanna know what to do to avoid it or fix it for next time. Thanks

  • Getting The operation can't be completed because you don't have permission to access "iPhoto Library". when copy from old leopard timemachine backup

    Getting The operation can’t be completed because you don’t have permission to access “iPhoto Library”. when copy from old leopard timemachine backup.
    any help?

    Welcome to the Apple Support Communities
    See > http://pondini.org/TM/E9.html

Maybe you are looking for

  • Wrong association of IDOCs to multiple BPM instances w/ correlation

    hi mates, Background We have an issue with a BPM that collects DIRDEB.PEXR2002 IDOCs using the correlation on Company Code & some other fields. The BPM is similar to BpmPatternCollectTime. The deadline branch triggers after 10 mins. It has been runni

  • How to preserve embedded artwork when converting to AAC 128kbps for iPod?

    Hi I am using the new 'convert higher bit rate songs to 128 kbps ACC' option in iTunes 9.1.1 (12). All of my artwork is embedded in Apple Lossless files, but on conversion to AAC for the iPod this embedded artwork gets stripped out of the file. Inste

  • ZISWIN not updating image safe data

    Hello, Have this weird problem on a HP d510c machine. When machine boot up to pxe, it doesn't find any work to do and shutdown. (other model works, HP dc7600 etc.) After some digging around, found ZISWIN contain no data. Register the wk and still not

  • How to maintain SAP system to provide web service

    Hello, I have created web service.  I did configuration via WSADMIN and WSCONFIG (in my system SOAMANAGER is not available). I have checked SICF and web service is activated. Unfortunatelly, web service is not working. Do I need to maintain something

  • Render Text as HTML

    Has anyone else had trouble with the Render Text As HTML function in CS4? I want to use two different fonts in the one textfield. Looks fine in Flash but when I export the swf, only the first font is used.