Manual
2 Dell OptiPlex E1 Managed PC Systems Documentation Update
To reinstall the Microsoft-updated ATAPI driver for Windows NT 4.0, perform the
following steps:
1. If you have not already done so, use the Program Diskette Maker to make a dis-
kette copy of the Microsoft-updated ATAPI driver diskette image on your hard-
disk drive.
The Program Diskette Maker is available through the
Dell Accessories
program
folder. For more information, refer to the online help provided in the Program
Diskette Maker.
2. Start the Windows NT operating system. If you are already running Windows NT,
close any open documents or application programs.
3. Insert the Microsoft-updated ATAPI driver diskette into drive A.
4. Click the
Start
button.
5. Click
Run
, type
D?VHWXSEDW
in the
Run
window, and then click
OK
.
A black screen will quickly appear and disappear, which indicates that the driver
file has been loaded. Setup automatically saves the existing
atapi.sys
driver as
atapi.000
and loads the new driver into the
system32\drivers
subdirectory in the
Windows NT directory.
6. Remove the diskette from drive A. Then restart the computer.
NOTE: To enable or disable direct memory access (DMA) while using the Microsoft-
updated ATAPI driver, run dmacheck.exe from \support\utils\i386 on the Microsoft
Windows NT Service Pack 3 CD.
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To remove the Microsoft-updated ATAPI driver, perform the following steps:
1. Start the Windows NT operating system. If you are already running Windows NT,
close any open documents or application programs.
2. Use Explorer to open the
system32\drivers
subdirectory in the Windows NT
directory.
3. Rename the existing
atapi.sys
file to
atapi.bak
.
4. Rename the
atapi.000
file to
atapi.sys
.
5. Restart the computer.
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The Dell OptiPlex E1 Managed PC system now supports Intel
®
Celeron
microprocessors with internal processing speeds of 300, 333, 366, and 400 mega-
hertz (MHz). The external processing speed for these microprocessors is 66 MHz.