Motorola USB08 - Manual (Page 236)

Designer Reference Manual USB08 Evaluation Board
236 Universal USB Device Driver (USBIO) MOTOROLA
Universal USB Device Driver (USBIO)
E.8.3 Uninstalling USBIO
In order to uninstall USBIO for a given device the Device Manager has
to be used. The Device Manager can be accessed by right-clicking on
“My Computer” icon on the desktop and then choosing Properties. In the
Device Manager double-click on the entry of the device and choose the
property page that is labeled “Driver”. There are two options:
• Remove the device from the system by clicking the button
“Uninstall”. The operating system will reinstall a driver the next
time the device is connected or the system is rebooted.
• Install a new driver for the device by clicking the button “Update
Driver”. The operating system launchs the Upgrade Device Driver
Wizard which searches for driver files or lets you select a driver.
In order to avoid that USBIO is reinstalled automatically and silently by
the operating system it is necessary to manually remove the INF file that
was used to install the USBIO driver.
During driver installation Windows stores a copy of the INF file in its
internal INF file data base that is located in
%WINDIR%\INF\ . The
original INF file is renamed and stored as oemX.inf for example, where
X is a decimal number. The exact INF naming scheme depends on the
operating system (Windows 2000 uses a slightly different scheme than
Windows 98). The best way to find the correct INF file is to do a search
for some significant string in all the INF files in the directory
%WINDIR%\INF\ and its sudirectories.
Note that on Windows 98 and Windows ME the INF file may also be
stored in a directory named
%WINDIR%\INF\OTHER\ . Another naming
scheme based on the provider name is used in that case.
Note also that on Windows 2000 the %WINDIR%\INF\ directory has a
Hidden attribute by default. Therefore, the directory is not shown in
Windows Explorer by default.
Once you have located the INF file, delete it. This will prevent Windows
from reinstalling the USBIO driver. Instead of that the New Hardware
Wizard will be launched and you will be asked for a driver.