BIOS Settings - Standard CMOS Setup
Standard CMOS Setup
Primary Master/Primary Slave/Secondary Master/Secondary Slave
The categories identify the types of 2 channels that have been
installed in the computer. There are 45 predefined types and 4 user definable types are
used for Enhanced IDE BIOS. Type 1 to Type 45 are predefined. Type "User"
is user-definable. If your hard disk drive type is not listed in the 45 predefined types,
you can use type "User" to define your own drive type manually.
If you select type "Auto", the system will
autodetect your hard disk at boot up. If you select type "User", related
information is asked to be entered to the following items. Enter the information directly
from the keyboard and press Enter:
If the controller of the HDD interface is ESDI, the type should be
set to "1".
If the controller of the HDD interface is SCSI, the type should be set to
If the controller of the HDD interface is CD-ROM, the type should be set to
||Enter the number of cylinders
||Enter the number of heads
||Enter Write precompensation value
||Enter Landing Zone sector
||Enter the number of sectors
||Normal,Large or LBA
(Write Precompensation) Older hard drives have the same number of
sectors per track at the innermost tracks as at the outermost tracks. This means that the
data density at the innermost tracks is higher and thus the bits are lying closer
together. Starting with this Cylinder until the end of Cylinders the writing starts
earlier on the disk. In modern HDs this entry is useless. Set it either to -1 or max Cyln
(a common value is 65535). For IDE (Integrated Device Electronics) hard drives it is not
necessary to enter a WP cylinder. The IDE HDD will ignore it for it has its own parameters
The address of the landing zone. Used in old HDs without an
auto-parking feature, or RLL. Set it to 0 or max Cylinder.
- Normal: Use the old IDE specification mode (drives up to 528
- Large: Not used very often, use LBA instead. (For drives that do not
support LBA and have more than 1024 cylinders.)
- LBA: (Logic Block Addressing): mode which considers logic blocks
instead of heads, cylinders and sectors. (for drives >528MB). If your BIOS does not
support LBA, several hard disk manufacturers provide drivers to trick the BIOS.
- You have two ways to boot up the system:
- When VGA used as primary and monochrome used as secondar, the
selection of the vido type is "VGA Mode".
- When monochrome uses as primary and VGA used as secondary, the
selection of the video type is "Monochrome Mode"
||Enhanced Graphics Adapter/Video Graphic Array. For EGA, VGA, SEGA
or PGA monitor adapters.
||Color Graphic Adapter, power up in 40 column mode.
||Color Graphic Adapter, power up in 80 column mode.
||Monochrome adapter includes high resolution monochrome adapters.
- This category determines whether the computer will stop if an error
is detected during power up.
||The system boot will not be stopped for any error that may be
||Whenever the BIOS detects a non-fatal error, the system will be
stopped and you will be prompted.
|All, but keyboard
||The system boot will not stop for a keyboard error, but it will
stop for all oherse.
|All, but disk
||The system boot will not stop for a disk error, but it will stop
for all ohers
|All, but disk/keyb
||The system boot will not stop for a keyboard or disk error, but it
will stop for all ohers
- This category is display-only. The contents are determined by the
POST (Power On Self Test) of the BIOS.
||The POST of the BIOS will determine the amount of base (or
conventional) memory installed in the system.
||The POST of the BIOS will determine the amount of extended memory
installed in the system.
||This is memory that can be used for different applications. Most
use for this area is Shadow RAM.
||The total memory is the sum of Base, Extended and other memory.
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