Enable write caching

configname: CONFIG_CDROM_PKTCDVD_WCACHE

Linux Kernel Configuration
└─>Device Drivers
└─>Block devices
└─>Enable write caching
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
If enabled, write caching will be set for the CD-R/W device. For now
this option is dangerous unless the CD-RW media is known good, as we
don't do deferred write error handling yet.