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How to recover corrupted files due to chkdsk
( for Auhma members, this is also posted at
http://forum.aumha.org/viewtopic.php?t=7218 ) Quick Summary (detailed description below): After rebooting my system, it randomly ran a utility similar to CHKDSK - which displayed that it was 'correcting' a large list of files. Upon entering windows and playing some of my mp3's, the audio data is altered. The filesize, name, mp3 tags and directory names are all the same as before - but the audio of the mp3 is swapped with some other mp3 - playing totally different music then desired. Detailed Description:Have I got a problem for you, which baffles even me. As experts in this area, I hope that this problem will not be new to you and you'll be able to guide me towards the right path of correcting this error! If you could take a few minutes to please review the following explanation of my problem, it would be very much appreciated! The situation: For the second time now, the audio data of my mp3s - specifically newly added mp3's dating about a month old or newer - has swapped itself with other audio data of other mp3s. The filenames, directories, file size and Tags all remain in original state, but the audio that comes through the speaker - has changed. Example: When attempting to play track 01 of my favorite Jazz album - the audio that I will hear - will be track 05 of my favorite Rock album! Tracks also have not just simply swapped... the track 05 of the Rock album that has replaced the track 01 - starts mid song. As it progresses to track 02 of what should be the Jazz album, it will instead continue from track 05 of the rock album and eventually go to track 06 of the Rock album. (An odd example but I hope it makes the problem I'm having clear) It's as if all the audio data of all my new mp3s, was lined up as a giant stream of music - and then it was shifted over without shifting over the actual files. The cause: I believe this has to do with Windows XP repairing "corrupt files" on reboot. I can't exactly remember what the program that popped up called the files...but a large list scrolled, indicating that it was repairing these files. Nothing caused the system to shutdown in error before this reboot. It was a simple power down. A newly installed 120 GB hard drive had been installed into the system, and had been completely updated by Windows Update. The system had been reset and powered down in success before, but it was this one time, upon rebooting the system - a utility screen came up, similar to the chkdsk utility, which began to scroll the many files - "repairing" them. The hard drive in question in which the files are contained, is not the OS hard drive - it's a secondary storage drive - of 160 GB (149 GB formatted). The chkdsk utility ran without any instruction to do so by myself, on the secondary drive that had been working perfectly with my previously installed HDD and WindowsXP. Nothing was modified before or after installing this new drive, so why it ran in the first place is still unknown. My Thoughts: Due to my discovery of this chkdsk utility (it may of been a different utility - it ran in the light blue WinXP screen after reboot, not in DOS) - I can only assume this was the cause of the error. I didn't catch that utility running last time I had this problem and dismissed it as corrupt data due to the old age of the previous files I had the problem with; and the large amount of internet radio streams that I listen to, which I had thought was the source of the newly replaced audio on the older mp3s.) I can only assume this was due to that utility making some type of adjustments to file table - which has in turn, caused the data to be swapped. Again - all file names, file sizes, file locations, mp3 tags and directory names have all remained the same - it's only the audio data that has changed. I also think this has something to do with the common error of Crosslinked files. Fearing this may only be my PC - due to some file table synchronization issue - I sent a few test mp3's to a friend of mine - for him to play them on his PC to test for this swapped audio issue. He reported that it also played incorrectly on his system, which indicated that the physical audio data of each file has indeed been changed. System Info: Alienware Area-51 ----------------- P4 1.8ghz 512 RDRAM Intel 850 Chipset OS Drive: BRAND NEW WD 120gb 8mb 7200 JB Drive (less than 1 week of use, windowsxp was JUST installed before this problem occured) Problematic Drive: BRAND NEW 160gb Samsung 2mb 7200 Drive (Less than 3 weeks of use... the files were transfered over from an older drive about 2 weeks prior to this problem) I can't honestly say if I remember whether the first time this happened was on this system or not... I think it was, but can't be 100% certain. The bios does show the drive correctly and all chkdsk's that have been run have come back with no errors. I would really like to talk to someone at Microsoft about this - possibly a source code programmer or someone who would know what could cause such an in-depth problem - but it appears it's very hard to find methods of speaking with such a person, especially for free... |
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