DevDelete=<device-driver-name>
Deletes any line containing the specified filename from the CONFIG.SYS file.
device-driver-name
Name of a file or device driver. The Installer searches the CONFIG.SYS file for the name and deletes any line containing it. Because MS-DOS does not permit implicit filename extensions in CONFIG.SYS, each device-driver-name must explicitly specify the filename extension.
This example DevDelete item in an Update Config.sys section deletes lines 1 and 3 but not line 2 of the example CONFIG.SYS file:
DevDelete=Foo.sys ;; lines in CONFIG.SYS Device=Foo.sys ;; line #1 Install=foo.exe ;; line #2 Device=Foo.sys /d:b800 /I:3 ;; line #3