directcd.exe is a part of Adaptec (now Roxio's) Easy CD/DVD Creator. This is packet writing software which allows the user to write and delete to CDs and DVDs as if they were a normal drive. "This program is a non-essential system process, but should not be terminated unless suspected to be causing problems. "
Non-system processes like directcd.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that over time your registry suffers fragmentation and accumulates invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues