symantec的官方解答: This problem is often caused by bad sectors on the hard drive.
To resolve the problem
1. Run ScanDisk (in Windows 9x/Me) or CHKDSK (in Windows NT/2000/XP) to perform a thorough surface scan of the disk. This flags any bad sectors on the disk so that they cannot be used in the future. 2. Reinstall the software that you were using when you saw the error message to ensure that none of the program's files are corrupted.
If the error still occurs after you have done this, try any of the following:
* Update the product to the current version. * If your computer has two IDE hard drives that share the same cable, try connecting the drives using separate cables. * If the error is the result of a corrupted file, you can identify the affected file by running your program (PartitionMagic, DriveCopy, Drive Image, etc.) at a command prompt using the /dbg switch (debug) and sending the results to a text file. When the error occurs again, the name of the file that was being read at the time that the error occurred is written to the text file. After you have identified the corrupted file, replace it with a good backup copy of the file, if possible. * If you were using DriveCopy when you saw the error, try rerunning DriveCopy at the command line using the /ire switch (Ignore Redundancy Errors).