CD/DVD File System Reader - Windows 11 Service
ISO9660/Joliet File System Reader for CD/DVDs. (Core) (All pieces).
This service also exists in Windows 10, 7, 8, Vista and XP.
Startup Type
| Windows 11 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 21H2 | Disabled | Disabled | Disabled | Disabled |
| 22H2 | Disabled | Disabled | Disabled | Disabled |
| 23H2 | Disabled | Disabled | Disabled | Disabled |
| 24H2 | Disabled | Disabled | Disabled | Disabled |
Default Properties
| Display name: | CD/DVD File System Reader |
| Service name: | cdfs |
| Type: | filesys |
| Path: | %WinDir%\system32\DRIVERS\cdfs.sys |
| Error control: | normal |
| Group: | Boot File System |
Default Behavior
The CD/DVD File System Reader service is a file system driver. If CD/DVD File System Reader fails to start, the error is logged. Windows 11 startup proceeds, but a message box is displayed informing you that the cdfs service has failed to start.
Restore Default Startup Type for CD/DVD File System Reader
Automated Restore
1. Select your Windows 11 edition and release, and then click on the Download button below.
2. Save the RestoreCDDVDFileSystemReaderWindows11.bat file to any folder on a local drive such as SSD or a hard disk.
3. Right-click the downloaded batch file and select Properties.
4. Check the Unblock checkbox and click OK.
5. Right-click the batch file again and select Run as administrator.
6. Restart the computer to save changes.
Note. Make sure that the cdfs.sys file exists in the %WinDir%\system32\DRIVERS folder. If this file is missing you can try to restore it from your Windows 11 installation media.