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BIOS SETUP
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First / Second / Third Boot Device; Boot Other Device
The original IBM PCs loaded the DOS operating system from drive A (floppy disk). Therefore,
IBM PC-compatible systems are designed to search for an operating system first on drive
A, and then on drive C (hard disk). However, the BIOS attempts to load the operating
system from the devices in the sequence selected in these fields. In addition to the traditional
drives A (“Floppy”) and C (“HDD-0”), options include “HDD-1”, “HDD-2”, “HDD-3”, and “CD-
ROM”; plus a “SCSI” hard drive, a “LS/ZIP” drive and a “LAN” drive. If your boot device is
not included in the list, you can set the “Boot Other Device” field to “Enabled”, and let the
system detect the drive automatically.
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Swap Floppy Drive
This field is effective only in systems with two floppy drives. Selecting “Enabled” assigns
physical drive B to logical drive A, and physical drive A to logical drive B.
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Boot Up Floppy Seek
When you select “Enabled”, the BIOS tests (seeks) floppy drives to determine whether they
have 40 or 80 tracks. Only 360-KB floppy drives have 40 tracks; drives with 720KB, 1.2MB,
and 1.44MB capacity all have 80 tracks. Because very few modern PCs have 40-track
floppy drives, we recommend that you set this field to “Disabled” to save time.
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Boot Up NumLock Status
Toggle between “On” and “Off” to control the state of the NumLock key when the system
boots. When toggled “On”, the numeric keypad generates numbers instead of controlling
cursor operations.
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Gate A20 Option
Choose “Fast” (default) or “Normal”. “Fast” allows RAM access above 1MB to use the fast
Gate A20 line.
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Typematic Rate Setting
When this function is disabled, the following two items (Typematic Rate and Typematic
Delay) are irrelevant. Keystrokes repeat at a rate determined by the keyboard controller in
your system. When this function is enabled, you can select a typematic rate and typematic
delay.
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