files that “disappeared” from a SATA hard drive with a CRC error

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Storage
On a 200 gig SATA hard drive that is almost full, formatted with NTFS, under WIN XP Pro, SP1, most of the data suddenly disappeared. Properties of the drive shows that it is almost full, yet the actual data appears only to take up about 38 gig. Most of the files were larger video files. Most of the directories and files do not show up during a search. The files that do show up are the ones beginning with numbers and a or b. Changing the attributes does no good. The error when attempting to copy the drive is a "CRC" error. Any suggestions in recovering the data on the drive?

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You could try a FORMAT /MBR that used to work on FAT and FAT32 (I don’t know about NTFS). In any case do not work with this PC as the work would re-allocate sectors.
If this does not work, or you don’t want to take a chance, boot from a CD that has an undelete program on it (you must create the CD on another PC). You may be able to see your files starting with a !. Change the ! to another character and they will come back.

If nothing works, get your files back from a backup.

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