Device \\.\SymantecSnapshot1 cannot be opened. Error 0000045D: The request could not be performed because of an I/O device error.

Problem

Backup of Data partition presented this error. Could not Create a shadow copy either. 

Error Message

  Device \\.\SymantecSnapshot1 cannot be opened. Error 0000045D: The request could not be performed because of an I/O device error. 

Solution

Run 'Chkdsk /r' on source disk.

For more information on chkdsk command refer the site: 

http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/chkdsk.mspx?mfr=true


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