Can't open file on external hard drive?

Hi,
I'm using an external hard drive for mac backup and also to store photo files. I copied some photo files to the drive about two weeks ago and their icon appears, but when I want to open them, I get an error message: "The alias “...” can’t be opened because the original item can’t be found." There is also a small arrow on the icon. My other files can be opened okay.
What's also strange is that I found the icon of the external drive in the folder with the picture files, even though I did not drag it there (the main icon is till on my computer's desktop, where it should be.) That icon also has a small arrow on it. When I click on it, it opens and I can see my folders, but the photo folders with the arrow on it will still not open.
I tried ejecting the drive and reconnecting it, but it didn't help. Is there anything I can do to recover the missing photo files, or are they most likely gone? I have deleted these pictures from my computer hard drive. What should I do about the mysterious second external drive icon? Delete it or keep it? Can I somehow use it to restore the photo files?
Any help appreciated! Thanks!

The Hard Drive is a :
Toshiba Canvio® Connect 1TB Portable Hard Drive (Silver)
Model: HDTC710XS3A1
This one: http://www.staples.com/office/supplies/StaplesProductDisplay?langId=-1&storeId=1 0001&krypto=3zEkJ%2BPHCwJUtrlzjGByIaVT405Hn%2BOkggwamseD1O2Y0FHbJ9AUp%2FvPow7k22 XRWnJ6JpaVN8kRgl1%2FsFLgpeXF3MELtwm2GBihw8f7efXGqDPuH1gOcMRylnlmBw9gsk%2BTp1l7y9 CIe9KKQs5NR6dOV3HVJyJoGFWpJuhiI4ebeznLAndHONOpAQH7BG04MKAdFPnSHdRzYEBcRoM%2FVHQM k2PSq4vj%2F684ZdSvLVCllSq4ffM7sqpFRf0VO825mlCiumRBMCpX4RLzBCDAjoVpsvSrfRAuJkk4ZW NwBP3Qfzok8RiYCyj3rmcmGc1iFsFS6dhKjH9xnnhEkb5%2Bag%3D%3D
I copied the photos by dragging and dropping them into the folder on the external drive. I highlighted them all and dragged them together, then clicked "Arrange by Name", so I would find them. As the folders were visible, I assumed they were copied correctly, however I'm not sure I actually opened one to make sure.
Other than the photo folder I have the hard drive connected to Time Machine and it automatically backs up files. I still have about 700MB of space left on the drive.
I used my Mac (disk utility) to format the drive, not the software that came with it, as someone on this forum recommended. Format is: Mac OS Extended (Journaled). So far, it had been working great.
Just looked at Disk Utility and it's strange, it's as if the Toshiba drive appears twice, with its original name and then the way I renamed it "Mac Backup". Not sure if that's normal? When I click on Mac Backup it correctly states how much storage I have left, but it lists over 230,000 folders and over 1.3 million files, which seems way too much, even considering the regular backups.

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Can't delete file from external hard drive

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There is a permition problem with my external hard drive (no time mashine on it!) - can't delete certain files.
I copied my documents on my external hard drive from previous computer with windows and later with linux system on it and there had been changed icons at certain folders previously. I mention this, becouse what linux did was that it locked the changed icon files and I couldn't delete them until I unlocked them manually. But at least it showed me that i don't have permition and i could change it. Well, now I mounted the disk on my new macbook and wanted to delete some files and it seems that there is the same problem with permition, at least it seems to happen with the same files. When I want to delete them, the system asks me for admin password, I give it allright, it makes the sound as if the folder was moved to trash but that's all. the folder is still there even after dismounting and restarting. I already checked the permitions and it says in the info that i can read and write with the file so it looks as if my rights were ok...
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Message was edited by: brevon

Thanx for such qucik reply!!! The pages were great, it had an answer for my problem, but unfortunately it also involved me dealing with it only on the MacIntosh HD itself, not on mounted external drive I suppose... So it didn't work they say that there is an icon in the left corner indicating locked folder - I don't see any icon on it. It says you can untick the box to unlock the folder - there is no tick to be unticked. Finally, they say that if I don't have permition or rights I cannot delete it. But how do i change permittion which already says that i can read and write in it? So everything appears to be normal only I cannot delete it. there is not even any warnig telling me I don't have enough rights, it just requires the password and after me typing it in it makes the sound of scraping paper but does nothing more. I aslo had some problems with emptying Trash after being seemingly succesful with one file and had got so far to have them appear in the Trash (no clue how this one actully got there though..) I followd the advice and emptied the Trash with Terminal. The Folder is still there but it shows 0 Kb... So far so good BUT: It is still on the external drive, so I obviously only managed to copy it into the Trash!!! Phew, innit a bit too tight to poor owners, this macbook?? I want my rights back!

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Evening,
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Hello bbryson68,
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http://help.apple.com/imovie/mac/10.0/#mov3fa25bae7
Take care,
Alex H.

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Can't open file on external hard drive?

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