Drive Letter Access
Process 'tfswctrl.exe' is associated with 'drive letter access' (DLA) a commercial 'packet writing' application for Windows. DLA allows users to create, modify, and delete files and directories on demand without the need to burn a whole disc.
Developed by 'VERITAS Software' but now owned by 'Sonic Soloutions' the process tfswctrl.exe is a common occurence due to the fact that DLA is packaged with the majority of CD and DVD recording drives.
DLA is either pre-installed or ready for installation on PC systems produced by: Dell, HP, IBM, Sony and Toshiba.