• Valid program

    REDBOOK.SYS Information

    This is a valid program that is required to run at startup.

    This program is required to run on startup in order to benefit from its functionality or so that the program will work. The following information is a brief description of what is known about this file. If you require further assistance for this file, feel free to ask about in the forums.

  • Name
  • Filename
  • Command
  • Description
    According to this MSDN article, "The Redbook system driver (Redbook.sys) is the KS filter that manages the rendering of CD digital audio. The Redbook driver is a client of the SysAudio system driver. The system routes CD digital audio through the file system to the Redbook driver and then to the SysAudio driver. The CD digital audio is rendered on the preferred wave output device (as set in the Multimedia property pages in Control Panel).".
  • File Location
  • Startup Type
    This startup entry is installed as a Windows service.
  • Service Name
  • Display Name
    Digital CD Audio Playback Filter Driver:
  • HijackThis Category
    O23 Entry
  • This entry has been requested 17,634 times.


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This is NOT a list of tasks/processes taken from Task Manager or the Close Program window (CTRL+ALT+DEL) but a list of startup applications, although you will find some of them listed via this method. Pressing CTRL+ALT+DEL identifies programs that are currently running - not necessarily at startup. Therefore, before ending a task/process via CTRL+ALT+DEL just because it has an "X" recommendation, please check whether it's in MSCONFIG or the registry first. An example would be "svchost.exe" - which doesn't appear in either under normal conditions but does via CTRL+ALT+DEL. If in doubt, don't do anything.

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