The Digi device driver software can be removed from the kernel by using the program custom. The Development Kit is not required, although the link kit must be installed.
Log onto the console as super-user (root), and enter this command: custom
Choose Software > Remove from the menu that appears.
Choose the PortServer driver.
When prompted to remove PortServer entries from /etc/ttytype, enter <y>
to remove the entries. Enter <n> to preserve the entries.
When prompted to boot the new kernel by default, enter <y> for the new kernel to boot
by default. Enter <n> if there is a specific reason for this new kernel not to boot
by default.
When prompted to rebuild the kernel environment, enter <y>.
Exit custom.
Enter the following command to shut the system down
and boot the new kernel:
shutdown -y -g0