A. This is easy to remedy and is usually caused by reinstalling Windows NT.

  1. Start a Command Prompt (cmd.exe)
  2. Enter the command
    attrib c:\boot.ini -r -s
  3. Now edit boot.ini
    edit boot.ini
  4. You will see lines like
    multi(0)disk(0)rdisk(0)partition(2)\WINNT="Windows NT Workstation Version 4.00"
    multi(0)disk(0)rdisk(0)partition(2)\WINNT="Windows NT Workstation Version 4.00 \[VGA mode\]" /basevideo /sos
    C:\ = "MS-DOS"
    under the \[operating systems\] section of the file, if you see any duplicates delete them, make sure you delete the right ones if they differ with the multi(0)disk(0)rdisk(0)partition(2) parts as it means you had NT installed on a different disk/partition before.