DLL Tool

How to fix cdfs.sys errors

DLL ToolDLL TOOL downloads cdfs.sys and repairs cdfs.sys BSOD for machines installed with MS OS such as Windows 7 and Windows XP.




Introduction to cdfs.sys

CDFS is short for CD-ROM File System and the cdfs.sys file is CD-ROM File System Driver located in %SYSTEMROOT%:\ WINDOWS\ winsxs\ amd64 Microsoft windows cdfs 31bf3856ad364e35 6.1.7600.16385 none 025c84b636a4ef6d\. Its file size is 92160 bytes and the file version is 6.1.7600.16385.

The cdfs.sys is created as one of your Windows hardware device drivers. UDF is applied most of the time. CDFS adopts the ATAPI block driver for audio and video navigation and playback while UDF applies the USB block driver or the ATAPI block driver in this regard. It adheres to the ISO 9660 specification and allows long file names. UDF adheres to OTSA UDF revisions 1.02 via 2.50. These versions of UDF specifications substitute CDFS for optical media file systems that enable live file systems apart from mastered media. UDF is meant to take the place of CDFS in one way or another and coexist with it.

Common problems with cdfs.sys file

  1. You received an update from MS and now your cd/dvd rom does not play. You can see under System that the cdfs at c:\windows\system32\drivers\cdfs.sys has been disabled. You cannot update to fix this issue.
  2. Cdfs files and why there are no helpful responses: You have the same curiosity about cdfs files, yet from the inept answers you read so far, you feel posting this inquiry will be moot.
  3. The files cdfs.vxd, cdtsd.vxd and cdvsd.vxd are missing in your system Vista Home Premium 32 bit. request if you can get the same as your CD/DVD is not able to read/write data discs.
  4. You have photos recorded on cd 2004 (shows format CDFS) actually you can not show any picture (format IPEG-Bild) clicking on any picture starts the loading process without result.

What are the causes of cdfs.sys errors?

The CDFS driver is currently running but disabled on startup, you still cannot read it. The system needs to be able to read it during boot, you received an update from MS and now your cd/dvd rom does not play. It has been disabled.

From the web pages you have accessed on Microsoft sites and Google searches, it seems that there are too many users with the same problem. There are hardly any workable answers to them, which may turns you away from a defender of Microsoft.

How can I fix this cdfs.sys error?

Using Disk Management does not work, nor does trying to right-click and then selecting format, as the format selection is grayed out. You can also try to uninstall the driver which forces the USB to be recognized as a CD Drive, but Windows cannot detect it as a Mass Storage Device, and stays as a Device. Now, apply DLL TOOL to change the format and have it recognized as a Mass Storage Device.

If loading the cd (CDFS) and trying to see the pictures fails, and searching in the IE shows many problems about reading cd's with CDFS-Format, you may use DLL TOOL to clean up the registry and repair the keys related to cdfs.sys, your issues will be resolved.


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