Lion creates hidden files prefixed by ._

When I copy files to a USB drive, Lion creates files which are prefixed by "._" , e.g. I copy the file mymovie.avi, it also creates ._mymovie.avi. The extra file is not visible on my computer, but on my DVD-player. It was not like this in Snow Lion. Can anyone tell me how to turn this off? Since the GUI on my dvd player is not so great, this completely messes up the navigation...
BR,
Fredrik

How is the USB drive formatted? I'm guessing it's formatted FAT32 for a PC. Unless you need to have the drive formatted to use with Windows, then you need to repartition and reformat the drive for OS X:
Drive Preparation
1. Open Disk Utility in your Utilities folder.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed.
This will erase the entire drive, so if you have files you wish to preserve then copy them elsewhere until after you complete the reformatting.

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Click 'Compile' then 'Save As'
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*Apple Double Format Creates File Name With the Prefix '._'*
http://support.apple.com/kb/TA20578?viewlocale=en_US
Also take a look at [Blue Harvest|http://www.zeroonetwenty.com/blueharvest].
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Hello Soave
Hope to answer some Qs.
1) The files aren't useless to OS X. Please follow this link to read more.
2) Mac OS X is based around Unix. In Unix, the convention to hide files is to prefix a full-stop. Windows does not recognise this as a hidden file and hence will simply show them with the preceding full-stop.
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I haven't personally used it, but this program might be of use to you.
James

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OT

Lion creates hidden files prefixed by ._

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