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Microsoft KB Archive/101964

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Knowledge Base

Cannot Boot Windows NT After Running OS/2

Article ID: 101964

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 Q101964


You may not be able to boot Windows NT from an HPFS partition after running OS/2.


OS/2 clears the flags field for the root directory Fnode, causing Windows NT to be more strict about allocation structures and mark the root directory as corrupt. This prevents your machine from booting from the HPFS partition.


To work around this problem, boot from the NTFS or FAT partition. After you boot Windows NT, CHKDSK can correct the root directory Fnode flags.

Additional query words: prodnt

Keywords: kbinterop KB101964