Dell Precision 420 User Manual page 119

to 84-key keyboards).
When Num Lock mode is activated, the rightmost bank of keys on your keyboard provides the mathematical and numeric functions shown at the
tops of the keys. When Num Lock mode is turned off, these keys provide cursor-control functions according to the label on the bottom of each key.
PCI IRQ Assignment
PCI IRQ Assignment specifies which IRQ lines are assigned to the Peripheral Component Interconnect (PCI) devices installed in the computer.
Press <Enter> to configure these devices. Then select the device whose IRQ line you want to change, and press the plus (+) or minus (–) key to
scroll through the available IRQ lines. Normally you do not need to change the IRQ lines assigned to PCI devices unless a particular device, device
driver, or operating system requires a specific IRQ line already in use by a PCI device.
NOTE: Manually assigning a particular IRQ line to a device may cause a conflict with another device trying to use the same IRQ line,
which can cause one of the devices or the system to become unstable or inoperable.
Primary Drive n and Secondary Drive n
Primary Drive n identifies drives attached to the primary EIDE interface connector (labeled "IDE1") on the system board; Secondary Drive n
identifies drives connected to the secondary EIDE interface connector (labeled "IDE2"). Use the secondary EIDE interface connector for EIDE
CD-ROM and EIDE tape drives.
NOTE: For all devices obtained from Dell that use the integrated EIDE controller, set the appropriate Drive option to Auto.
The following settings identify the type of EIDE devices installed in the computer:
Auto (use this setting for all EIDE devices from Dell)
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Off
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User 1 or User 2
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A specific drive-type number
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To choose a setting for each option, press <Enter> to access the field's pop-up settings menu. Then type characters from the keyboard or press
the left- or right-arrow key to cycle through the settings.
A drive-type number specifies the parameters of a hard-disk drive, based on a table recorded in the system's BIOS.
NOTE: Operating systems that bypass the system BIOS may not obtain optimum hard-disk drive performance.
If You Have a Problem
If the system generates a drive error message the first time you boot your system after you install an EIDE drive, it may mean that a third-party drive
(a drive not purchased from Dell) does not work with the automatic drive-type detect feature. If you suspect that your problem is related to drive
type, try entering your drive-type information in one of the following ways:
If you know the drive-type number
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Use the drive-type number you found in the documentation that came with the drive, or if the drive was installed by Dell when you
purchased your system, access the Manufacturing Test Report from the Dell Accessories folder.
To set the drive-type number in System Setup, highlight the appropriate drive option (Primary Drive 0 or Primary Drive 1) and type
the correct drive-type number. If you prefer, you can press the right- or left-arrow key to increase or decrease, respectively, the drive-
type number until the correct one is displayed.
If you do not know the drive-type number
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The Drive 0 and Drive 1 options display the following parameters for each drive:
Drive Type is the drive-type number for the selected hard-disk drive.
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Capacity (automatically calculated by the system) indicates the number of millions of bytes of storage provided by the drive.
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Cylinders is the number of logical cylinders.
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Heads indicates the number of logical heads in the drive.
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Sectors is the number of logical sectors per track.
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If none of the supported drive types match the parameters of your new drive, you can enter your own parameters. To do so, highlight the Drive 0
option and type u to display User 1. You can then press the right- or left-arrow key to switch between the User 1 and User 2 settings (only two
user-defined drive types are allowed). Then press <Tab> to highlight each of the parameter fields in succession, and enter the appropriate number
for each field.