Microsoft KB Archive/168645

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Error: Please Insert the Compaq SSD into Drive "CD-ROM"

Article ID: 168645

Article Last Modified on 11/1/2006


  • Microsoft Windows NT Workstation 3.5
  • Microsoft Windows NT Workstation 3.51
  • Microsoft Windows NT Workstation 4.0 Developer Edition
  • Microsoft Windows NT Server 3.5
  • Microsoft Windows NT Server 3.51
  • Microsoft Windows NT Server 4.0 Standard Edition

This article was previously published under Q168645


When you upgrade a Compaq server from a Smart Start CD (that includes Compaq's OEM version of Windows NT) to a retail copy of Microsoft Windows NT, you may get the following error:

Please insert the Compaq SSD into drive "CD-ROM".

where "CD-ROM" is your drive letter assignment for the CD-ROM.


This is caused when the original installation of Windows NT came from a Compaq Smart Start CD. The Compaq Software Support Diskette (SSD) is included on the Compaq CD and was installed at the same time from one media. When an upgrade is attempted from a non-Smart Start installation CD, it looks at the following registry setting for the setup source path:

   SourcePath E:\ (CD drive enumeration)


The Compaq SSD now needs to be installed from a disk. Since the upgrade is looking for the CD (E: etc.) you cannot insert the disk into drive A: and continue. To fix this, do one of the following:

  • Press the Esc key to finish the upgrade. Install the SSD from a disk later.


  • Edit the registry key:

WARNING: Using Registry Editor incorrectly can cause serious, system-wide problems that may require you to reinstall Windows NT to correct them. Microsoft cannot guarantee that any problems resulting from the use of Registry Editor can be solved. Use this tool at your own risk.

  1. Start Registry Editor (Regedt32.exe) and locate the following subkey:

  2. Change the SourcePath to A:\ (do this before doing the upgrade).
  3. Exit Registry Editor and restart your computer.

The upgrade process will then ask you to insert the SSD into drive A:\.

Additional query words: Compaq SSD Smart Start CD

Keywords: kbsetup KB168645