Sync Files on External Hard Drive with Internal Drive

Is there a way to sync the files on a portable external HD with files on an internal HD?
I use the portable drive for a laptop and the internal drive on my desktop. Ideally I'd like to be able to work from either drive and then update the "opposite" drive. i.e. if I work from the external then the internal gets updated or vice versa.
My second choice would be to always work from the external drive and write the updates to the internal.
What's the best application to do this?
Thanks

If it is just a matter of keeping documents synced, there are lots of third party folder syncing programs. For example, I use DejaVu to sync my MacBook to an external drive I use for backup purposes. Two other products I've used and can recommend are ChronoSync and Synchronize X.
But there are two other issues you need to be aware of because mere file syncing isn't the answer. First, you might have a file that you edit on the notebook and also edit on the desktop without having performed a file sync. Some syncing software is 'smart' about this issue and deal with it. Others aren't and you can wind up losing edits.
Second, you probably don't want to use file syncing for things like email, iCal, your address book, etc. First, there's the potential problem mentioned above. Second, these files can get pretty large - especially email, and add lots of needless time to the sync process. For these, Apple's .Mac is a possible solution as is a third party .sync program make by Mark Space

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If you want to just extract the playlists from your iPod, plug it in iTunes. When it appears under devices, right->click on it and choose Export Playlists. Save them to a location such as your desktop and them import them into your library once you have copied and imported all of your music back into it.
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https://discussions.apple.com/thread/2452022?start=0&tstart=0
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Paging file on External Hard Drive?

Sorry guys,
I seem to have read something on this, but can't relocate the post I thought I saw it on. Most posts talk about the Paging File and External Hard Drives as two different instances. I am always learning something new so am asking if you guys are doing this, or did I misread something.
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I don't think I am asking this very well, but hope you catch my drift.

Bill and Steve,
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Thanks for one TIP I believe Bill gave in another Post was to not store Projects? or video? on the Desktop, because it may have different characteristics (video editing problems?) than other storage folders. I thought that was interesting because I think people get used to putting stuff on the Desktop because it's easier than going to other folders. So now I just have Desktop Shortcuts to the folders I use all the time.
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Thanks for using Apple Support Communities.
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I moved itunes file to external hard drive and want to move the file on my pc to recycle bin. When I move i get an error message that it cannot delete ituneshelper.dll access is denied. Can I move that file to the recycle bin?

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Message was edited by: Mark Hilderbrandt

Mark Hilderbrandt wrote:
I am wondering how to encrypt file on external hard drive. Is it best to use the disk image system?
I think so, but I haven't used anything else.
Also, can I make disk images flexible, so that I may keep adding files to it in the future? Ideally there are a few GBs of info I would like to store this way, but will add more later.
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Message was edited by: Mark Hilderbrandt

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Gregory Taddeo wrote:
How do I copy files fromone external hard drive to another external hard drive via mac book air
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free to use
http://www.shirt-pocket.com/SuperDuper/superduperdescription.html

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I'm having a problem with iTunes 11.0.1. I can't import .mov video files stored on an external hard drive. I can however import .m4v files from the same external drive. Using either the add to library option or dragging files from the finder.
I can add .mov files from the internal though. Strange I know.
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I would like to be able to simply create a general iTune compatiable file using iFlicks which only takes a minute or two per file to convert. I'm currently converting them to .m4v just for the sack of being able to import them into iTunes from an external drive takes 45 minutes per file.
Has anybody else had this problem? Any ideas on a fix to allow me to import .mov files from an external drive into iTunes without copying it to the iTune library file.
Many Thanks
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This might be worth a shot - basically seeing if Vista permissions could be the culprit.
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Sync Files on External Hard Drive with Internal Drive

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