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To remove the Microsoft-updated ATAPI driver, follow these steps:

1.Start Windows NT. If you are already running Windows NT, close any open docu- ments or application programs.

2.Use Windows NT 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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In addition to the online System User's Guide, your system also includes online versions of the Reference and Installation Guide and the Diagnostics and Trouble- shooting Guide in portable document format (PDF) files on the hard-disk drive. These documents are located in the Dell Accessories folder.

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The following subsections provide updated infromation about some of the options on the System Setup screen. Page 1 of the System Setup screen includes new fields for DAC Snoop and ACPI and reports primary drives and chassis intrusion differently than before (see Figure 1-1). Use of the Setup Password (reported on page 2 of the Sys- tem Setup screen) has also changed.

Dell Computer Corporation (www.dell.com)

Page 1 of 2

System OptiPlex GX1 400MTbr Setup

BIOS Version: XXX

Time:

13:17:02

Date:

Mon April 1, 1998

This category sets the time in

Diskette Drive

A:

3.5 inch, 1.44 MB

24-hour format (hours:minutes:

seconds) for the internal clock/

Diskette Drive

B:

Not Installed

calendar.

Drives:

Primary

Type Cyls Hds

Pre

LZ Sec Size

To change the value in a field,

Drive 0:Auto EIDE Drive

9216

enter a number or use the left- or

Drive 1:None

right-arrow key.

Secondary

Changes take effect immediately.

Drive 0:Auto

CD-ROM Device

Drive 1:None

None

Pentium® II Processor 400 MHz

Reserved Memory:

Level 2 Cache: 512 KB Integrated

CPU Speed:

400 MHz

Num Lock:

On

System Memory: 32 MB SDRAM

Chassis Intrusion:

Enabled

Video Memory: 4 MB SGRAM

DAC Snoop:

On

Service Tag: XXXXX

Asset Tag: XXXXX

ACPI:

On

Tab,Shift-Tab change fields

,

change values

Alt-P next

Esc exit

Alt-B reboot

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Dell OptiPlex GX1 and NX1 Documentation Update 1-5