Asus M5N, Software Manual

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BIOS Setup
[Hard Disk] [ATAPI CDROM]
Type [Auto]
Select Auto to automatically detect an IDE type drive. This option only works with standard built-in
IDE drives. If automatic detection is successful, the correct values will be filled in for the remaining
fields on this sub-menu. The configuration options are: [Not Installed] [Auto] [CDROM] [ARMD]
LBA/Large Type [Auto]
When Logical Block Addressing is enabled, 28-bit addressing of the hard drive is used without regard
for cylinders, heads, or sectors. Note that Logical Block Access may decrease the access speed of the
hard disk. However, LBA Mode is necessary for drives with greater than 504MB in storage capacity.
The configuration options are: [Disabled] [Auto]
Block [Auto]
Auto automatically sets the number of sectors per block to the highest number supported by the drive.
Disabled - The data transfer from and to the device occurs one sector at a time. Auto - The data transfer
from and to the device occurs multiple sectors at a time if the device supports it. The configuration
options are: [Disabled] [Auto]
PIO Mode [Auto]
When enabled, this option speeds up communication between the system and the IDE controller by
using enhanced I/O transfer modes (PIO Modes). Different speeds are supported by different genera-
tions of IDE devices. The configuration options are: [Auto] [0] [1] [2] [3] [4]
NOTE: Before attempting to configure a hard disk drive, make sure you have the con-
figuration information supplied by the manufacturer of the drive. Incorrect settings
may cause your system to not recognize the installed hard disk. To allow the BIOS to
detect the drive type automatically, select [AUTO].