7 Replies Latest reply: Jun 25, 2012 2:36 PM by BDAqua
Adam Fratus Level 1 (0 points)

I am having a strange problem with image thumbnails not appearing in Finder. I am editing some very large TIF files on a Macbook that is running Lion. These images are edited on an external drive, and when I hook the drive up to my main iMac, which is running Leopard, the new images I have created in Lion do not have thumbnails. The only way that they will appear is if I open the images in Photoshop and just resave them on the machine running Leopard. This method poses a problem because each image takes about 5-8 minutes to open, and another 5-8 to save. I have hundreds of images and don't have the time to do that to each one.


Does anyone know what could be causing this problem?

  • Adam Fratus Level 1 (0 points)

    Anyone out there have any ideas? I am working on this stuff for a client who needs the ability to view these files in Finder, but haven't had any luck so far.

  • BDAqua Level 10 (122,286 points)

    Hi Adam,


    What Format is the external drive?


    I suspect it's not HFS+

  • Adam Fratus Level 1 (0 points)

    Thank you for taking the time to respond. The external drive was formatted as Mac OS Extended (Journaled), the same way both internal drives are formatted.

  • BDAqua Level 10 (122,286 points)

    Hmmmm, bit of a real mystery then.


    I wonder how long GraphicConverter would take to create the icons?




    Or ThumbsUp...





    Enabling image thumbnails in the Finder

    • From the Finder, hit command-J (or navigate from the View menu to Show View Options)
    • Inside the View Options panel, check the ‘show icon preview’ box
    • Close View Options and now you’ll have thumbnails for each image!

    By default, Mac OS X shows just a simple icon. This is what you will see with ‘icon preview’ enabled, a thumbnail of the image:

    Oh wait, just thought of something else, are you copying a whole folder that has a hidden DS_Store file in that may be holding the icons.thumbnails? If not try using a Folder for transfer!

  • Adam Fratus Level 1 (0 points)

    Those programs seems to create separate thumbnail files as JPG's. My problem is that the system thumbnail, the icon for the images, is just a blank space. There's not even a default placeholder image there, just the text underneath. When I try the 'Show Icon Preview' thing, nothing happens either. I am going to try and install OS X Leopard on my Macbook and try to eliminate variables. My guess is that the metadata is written a different way in Lion than it is in Leopard, so maybe the system is just throwing out the icon due to a discrepancy.


    I'm just guessing all of this though.

  • Adam Fratus Level 1 (0 points)

    I just wanted to update this thread and let everyone know how I fixed tis problem. I had to downgrade to Leopard on my Macbook. Once I did that, the thumbnails were now showing up on both computers. The images I had created on my Macbook under Lion were now no longer showing thumbnails after I installed Leopard, so it must be some weird OS compatibility bug.

  • BDAqua Level 10 (122,286 points)

    Thanks for the report!