File systems on CD-ROM and DVD disks

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CDs and DVDs are not automatically mounted, but this feature can be enabled.

To enable this feature, use the cdmount command to mount the CDRFS or UDFS file system, for example: 
cdmount cd0
You can manually mount a read/write UDFS with the following command: 
mount -V udfs DevName MtPt
Where DevName is the name of the DVD drive and MtPt is the mount point for the file system.