Asus P55SP4 - Manual (Page 18)

Feature Guide
Large IDE Hard Disks
For IDE hard disk drives, the BIOS provides three modes to sup­
port both normal IDE hard disks and also drives larger than 528MB:
Normal - for IDE drives smaller than 528MB
Large - for drives larger than 528MB that do not use LBA. These
can only be used with the MS-DOS operating system.
LBA - for drives larger than 528MB and up to 8.4 GB (GigaBytes)
that use Logic Block Addressing mode.
Other IDE Devices
Enhanced IDE allows the use of IDE devices other than hard
disks. Two devices that previously required non-standard or adapted
interfaces and are now available as standard IDE devices are Tape
Backup and CD-ROM drives. These will now be able to take advan­
tage of the ease of installation, lower cost and in some cases superior
performance of Enhanced ГОЕ, putting an end to the system configu­
ration complications created by their earlier interfaces.
To use IDE devices other than hard disks with this mainboard you
may need to install a device driver in your system software configu­
ration. Refer to the documentation that comes with any device you
will install for instructions about this and any otther installation re­
quirements.
Dual IDE Channel Support
With the on-board PCI IDE controller you can connect up to four
IDE peripheral devices to your system. With Enhanced IDE you can
connect two devices to each connector. All devices are categorized the
same way IDE hard disks have been in the past, with one device set
as the "Master'" device and the second as the "Slave" device.
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