Large Number Of Photoshop And Jpeg Files Corrupted

Discussion in 'Photoshop Tutorials' started by soinie, Nov 11, 2007.

  1. soinie

    soinie Guest

    Is it possible that a Photoshop file made up of a composite of jpegs
    contained in the same folder would corrupt the jpegs used to create
    the composite, or vice versa? I've been doing large scale panoramas
    made up of jpegs and I stored the panoramas and jpegs in the same
    folder which was probably a very stupid idea. Over time the photoshop
    files would become corrupted along with some of the jpegs. I've ruled
    out virus, malware and bad hard drive. I'm hoping this is the problem
    since I'm freaking every time I open a folder on the storage drive, a
    160 gig Seagate Sata drive. I'm using W2K SP4 and BreezeBrowser Pro
    for an image viewer. Some of the images had been originally worked on
    in Photoshop 7, then Photoshop CS2. The corruption hasn't happened in
    all of the folders with this arrangement; I'm wondering if the
    corruption occurs as the images in the folders are being worked on
    with greater frequency? I've subsequently placed the panoramas in
    different folders and now have only jpegs in separate folders. I
    burned everything to disc so I'm hoping the problem has been solved
    but I'm not that sure. The strange thing is photoshop (psd) files and
    some jpegs in many of the folders became corrupt, but there were
    some folders where this didn't happen. I suppose the solution is to
    burn hard copies ASAP, but I'd sure like to definitively know why this
    has happened. Thanks for any assistance.
     
    soinie, Nov 11, 2007
    #1
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  2. soinie

    toby Guest

    Generally one would blame a hardware problem (RAM, controller, cable,
    drive, power) - and you're also running Windows - so all bets are off.
    Backups are essential.

    I don't see how you can "rule out" faulty hardware (did you do a
    thorough memory test?) I can't speak for Windows but in UNIX based
    filesystems that are generally used, you are very unlikely to ever see
    a software fault. Sun's ZFS offers additional and unique data
    integrity guarantees. How valuable is your data?
     
    toby, Nov 12, 2007
    #2
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  3. soinie

    Hunt Guest

    I've been using PS since it hit the PC. In all of those years (actually
    decades), I've never seen corruption, like you suggest. In that time, the only
    file corruption, that has ever happened has been from hardware - SyQuest,
    SyJet, HDD (and this goes back to MFM HDDs). Some was from SCSI chains/cables,
    that just went south, while others were with the disks, themselves.

    Now, I have worked mainly with TIFFs and PSDs, leaving JPGs for the final
    output, if going to the Web, but one still should not encounter what you
    describe.

    I did have two images that went strangely dark, but we tracked this down to
    the output house, which was using MAC and their wanting to mount that SyQuest
    disk to their MAC/PC network, import to a PC and then transfer it to their
    MAC, rather than just mount it (it was a MAC formatted disk, that I output
    from PC, with the proper software, but they did not trust this and messed
    things up with their cobbled network). That was once, out of thousands.

    Though you state that it is NOT hardware, I'd rule out hardware 100%.

    Hunt
     
    Hunt, Nov 14, 2007
    #3
  4. soinie

    soinie Guest

    You're right about this type of corruption generally being caused by
    hardware malfunction, but I'm not sure what else it could be beyond
    the drive and the ram, and both have checked out. So just to rule my
    situation out, you do not think that having jpegs and psd files made
    up of the jpegs that are residing in the same folder would create a
    corruption of the psd files or vice versa? Do you think anti virus
    software (Avast) registry optimizer (Winaso) or defragging software
    (Perfect Disk 8.0) could be part of the problem? My other thought is
    graphics card memory, but the card, a Matrox Parhelia 256mg. AGP card
    has not created any problems that I can see.
     
    soinie, Nov 14, 2007
    #4
  5. It could also be the motherboard, or conceivably the drive cables or the
    power supply.

    Checking the RAM even with memtest86 won't necessarily catch all errors -
    for example, we had a m/b here which passed memtest86, but PS still crashed
    sometimes - it seems that the m/b couldn't cope with RAM in the last slot
    when under intense use. Replacement m/b cured it.

    It's always worth trying to open an apparently corrupted jpeg file with
    IrfanView, as it seems tolerant of errors that make PS refuse to open it.

    Andrew
     
    Andrew Morton, Nov 14, 2007
    #5
  6. soinie

    Hunt Guest

    Though I usually set up my folder hierarchy so that JPGs, or TIFFs go into a
    sub-folder for ease of work and some automation, I've had the NEFs, PSDs and
    output files, usually JPGs, in the same folder, with no problems. I am not
    saying that something cannot happen, only that in almost 2 decades, nothing
    has.

    As for other software issues, I do not use the products, that you mention, but
    do use others. Of the ones in your list, first suspect would be the defrag
    utility. I've used others, with no problem, and this goes back to MFM HDDs,
    with no problem. However, that would be a possible area.

    By the seat of my pants, I'd rule out the Matrox. It could play a role in
    display, but does not process any files in the IO chain, except to view them.

    Yout problem is interesting, and just because I've not had them with years of
    this sort of thing, doesn't mean that there is not some little glitch, that I
    have not encountered. I still keep coming back to the HDDs. That is the most
    likely culprit, though you say that that system checks out fine.

    Have you encountered any re-booting of the machine? One problem that often
    causes that situation is a faulty power supply, or cooling of the CPU and
    HDDs. Problems there could lead to corruption, especially if the files are
    going through the CPU, either in processing, or Moving/Copying, etc.

    Wish that I had some more ideas, other than, "hey, ain't happened to me... " I
    did have some corruption on the HDDs of a system that died, and then the files
    were recovered by Stellar-Phoenix, however, in that situation, I was glad to
    get about 90% of the files back, and just let the other 10% pass as part of
    not having a 100% up to date backup. Actually, I was gathering the files to
    burn a Ghost image of them, when the system went south - I was but a few
    minutes too late.

    I wish you the best and all of the luck that I can muster,

    Hunt
     
    Hunt, Nov 17, 2007
    #6
  7. soinie

    Hunt Guest

    Good ideas. I had assumed that the OP was ending up with files that were only
    partial, from the corruption. If it was a problem of PS not opening the file,
    I agree completely. Irfanview, or ThumbsPlus, etc., can open a lot of JPGs,
    that PS refuses to touch. If so, Open in (other app.), do a Save_As, into
    another folder, and then re-try in PS. It is sensitive to all sorts of little
    glitches in files, especially JPGs.

    Maybe you have helped the OP,
    Hunt
     
    Hunt, Nov 17, 2007
    #7
  8. soinie

    soinie Guest


    Thanks for all the replies. This site which pretty much sums up the
    reasons for possible data corruption:

    http://www.datarecovery.com.sg/data_recovery/data_corruption.htm

    but it doesn't appear to be uncommon. Basically it's important to
    back up asap. The more research I do the more I see people perplexed
    by their psd corruption.

    I found this on a digital camera forum:

    http://forums.dpreview.com/forums/read.asp?forum=1004&message=25429810

    And then I found this on Microsoft site about write caching:

    http://support.microsoft.com/?kbid=259716

    Thanks again for the help.
     
    soinie, Nov 17, 2007
    #8
  9. soinie

    toby Guest

    Did you run it for a long period?
    Yes, that is the PC world.
    I've also written a (free) PSD/PSB recovery tool:
    http://telegraphics.com.au/sw/#psdrecover
     
    toby, Nov 19, 2007
    #9
  10. soinie

    Greg Guest

    Are you using Vista? I have known Vista to corrupt jpg data, especially when
    using Photo Gallery to import and organise files. It sometimes overwrites
    markers put there by cameras and other devices with its own markers that
    indicate where the files have been put.
     
    Greg, Dec 24, 2007
    #10
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