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I'm running a 2 year old MacBook Pro with OSX 10.6, and i recently got a new Lacie 2TB hard drive in which i put about 500gigs worth of files on. Something happened, i dunno if i disconnected it while i was transferring them, or if the hard drive did it after the matter, but 75% of the stuff on that hard drive is now screwed up. By screwed up i mean that the files(mainly Pictures and videos) are either unreadable or readable but have lines through them(example: http://img88.imageshack.us/img88/681/img9446l.jpg ). The working 25% i had transfered at a later date.

Things to note:

-The thumbnails for the images look fine, but when you actually open the image they reveal to be corrupt
-When accessing the corrupt data, my processor locks out at 100% full usage and finder crashes until i restart
-Other files on my hard drive are fine, i even reformatted using that drive
-My hard drive runs in RAID, but im not sure if its RAID 0 or RAID 1, I'm pretty sure its RAID 0 since i have access to the full 2TB.

What i have already tried:

-Using MacKeeper to try and undelete the files from where i originally copied them from, but that failed.
-Using Drive Genius 2 to run an Integrity Check on the drive with the corrupt files which seemed to turn out ok.

So am i screwed? or is there any chance in saving these files?
 

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It looks like a problem with your graphics card displaying them, probably not the files themselves. Do you have access to another computer to view the same files?
 

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I experienced a similar situation, and my photos looked like yours. Halves, quarters, and overlaps as if the computer didn't know where the photo started and ended. A new, larger, hard drive had been installed in my 3 year old Gateway laptop. Apparently, it was unable to handle the larger drive size without being partitioned. There were no error messages, and it worked fine for a while. One day, it shut down normal, the next morning it was "missing the operating system". When it wrote to the "laptop imposed size limit", it wrapped around, and wrote over my master boot records, causing my files to become corrupt. The Gateway recovery section apparently kept my laptop from writing to the full disk. Check to see if your laptop supports a 2TB hard drive. If not, any write activity will further corrupt your files. Some of my files were recovered, but over a quarter of them were destroyed. Good luck.
 
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