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Microsoft KB Archive/102776

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Knowledge Base

Err Msg: Boot NTLDR: I/O Error Reading Disk

Article ID: 102776

Article Last Modified on 11/1/2006


  • Microsoft Windows NT Advanced Server 3.1
  • Microsoft Windows NT Workstation 3.1
  • Microsoft Windows NT Advanced Server 3.1

This article was previously published under Q102776


After Setup copies Windows NT system files to the hard disk and the system reboots from the hard disk, the following error may occur:

Boot NTLDR: I/O Error Reading Disk


Some generic Local Bus IDE controllers have been found to cause this error, although other problems can also cause this error.


If a Local Bus IDE host adapter is used in the system, replace it with a normal IDE host adapter. If switching to a normal IDE interface corrects the problem, contact the manufacturer for further information about compatibility with Windows NT.

Additional query words: prodnt VESA LB NTLDR I/O ERROR

Keywords: kbhardware kbsetup KB102776