Abit PR5 User Manual page 58

Large Hard Disk Modes
The last of the drive parameter entries – Mode – has three
options, Normal, LBA and Large. The Mode settings are
for IDE hard disks only, and it is important to understand
their function.
N or m a l
For IDE hard disks of 528MB or less.
L B A
This stands for Logical Block Addressing, the cur-
rent standard access mode for large IDE hard disk
drives. It allows the use of hard disks larger than
528MB by causing the IDE controller to translate
between the logical address it creates and the hard
disk' s actual physical address. The maximum drive
size supported is 8.4GB.
Large
For 1GB or smaller drives with more than 1024 cyl-
inders and no LBA support. This access mode
causes the Operating System to treat the drive as if
it has fewer than 1024 cylinders by dividing the
cylinder total in half and doubling the number of
heads. Drives needing this mode are less common.
Most large IDE hard disk drives currently available use
the LBA mode.
Floppy Disk Drives
The two floppy disk drive items set the drive type for
drives A and B, and must be entered manually. The op-
tions are
360KB, 5.25 in.
1.2MB, 5.25 in.
720KB, 3.5 in.
1.44MB, 3.5 in.
2.88MB, 3.5 in.
N o n e
Highlight the listing after each drive name and select the
appropriate entry.