Dell OptiPlex GX1 Installation Manual page 44

5.25 Inch, 360 KB
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5.25 Inch, 1.2 MB
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3.5 Inch, 720 KB
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3.5 Inch, 1.44 MB
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Not Installed
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The diskette option labeled "Use ZIP as A or B" is used to control the operation of an internally installed ATAPI Zip drive. The options are On and
Off. When set On, the Zip drive operates as a diskette drive and can be booted. When set to Off, the Zip drive operates as a normal ATAPI device.
You can have a total of two diskette devices, either diskette drives or Zip drives.
NOTE: Tape drives are not reflected in the Diskette Drive A and Diskette Drive B options. For example, if you have a single diskette
drive and a tape drive attached to the diskette/tape drive interface cable, set the Diskette Drive A option to match the characteristics of
the diskette drive and set the Diskette Drive B option to Not Installed.
Drives: Primary and Secondary
Primary identifies drives attached to the primary enhanced integrated drive electronics (EIDE) interface connector (labeled "IDE1") on the system
board; Secondary identifies drives connected to the secondary EIDE interface connector (labeled "IDE2"). It is recommended that you use the
secondary EIDE interface connector for EIDE CD-ROM and EIDE tape drives.
NOTES: For all devices from Dell that use the built-in EIDE controller, set the appropriate Drive option to Auto. For small computer
system interface (SCSI) devices, set the appropriate Drive option to None.
You must have an EIDE device connected to the primary EIDE interface if you have an EIDE device connected to the secondary EIDE
interface.
For older EIDE hard-disk drives not shipped with the system from Dell and less than 528 megabytes (MB) in capacity, you can use one of the
following options if the Autodetect feature does not work:
A specific drive-type number
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Usr1 or Usr2
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For each drive, seven parameters can be chosen as a group by drive-type number or entered individually from the keyboard. 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 choose the Usr1 or Usr2 option, you must supply the following parameters for the drive:
Type is the drive-type number for the selected hard-disk drive (in this case, Usr1 or Usr2).
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Cyls is the number of logical cylinders.
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Hds indicates the number of logical heads in the drive.
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Pre (precompensation cylinder) is the cylinder number at which the electrical current for the drive head changes to compensate for
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differences in data density across the disk surface (this parameter has no effect for EIDE drives).
Lz is the cylinder number that is used as the drive's landing zone for the heads when the drive is not in use.
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Sec is the number of logical sectors per track.
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Size (automatically calculated by the system) indicates the number of millions of bytes of storage provided by the drive.
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Reserved Memory
Reserved Memory allows you to designate a region of system board memory that can be supplied by an expansion card. You should not enable
the reserved memory feature unless you are using an expansion card that requires special addressing.
For example, you may have a memory expansion card that needs to be addressed starting at 15 MB. Selecting the 15M - 16M option in the
Reserved Memory option specifies that the base memory from 15 to 16 MB come from the memory expansion card (the base memory below the
15-MB address comes from the dual in-line memory modules [DIMMs] on the system board).
The Reserved Memory option has the following options:
None (the default option)
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512K - 640K
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15M - 16M
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CPU Speed
CPU Speed indicates the processor speed at which your system boots.
Press the left- or right-arrow key to toggle the CPU Speed option between the resident microprocessor's rated speed (the default) and a lower
compatibility speed, which lets you accommodate speed-sensitive application programs. A change to this option takes effect immediately
(rebooting the system is not required).
You can also toggle between the rated processor speed and the compatibility speed while the system is running in real mode by pressing
<Ctrl><Alt><\>. (For keyboards that do not use American English, press <Ctrl><Alt><#>.)