Techniques In Drive Configuration; The 528-Megabytes Barrier; The 8.4-Gigabytes Barrier - Maxtor DiamondMax Plus9 60GB AT Product Manual

3.7

TECHNIQUES IN DRIVE CONFIGURATION

3.7.1

The 528-Megabytes Barrier

Older BIOS that only support Int 13 commands for accessing ATA drives
through DOS based operating systems will be limited to use only 1024
cylinders. This will reduce the effective capacity of the drive to
528Mbytes.
Whenever possible the Maxtor DiamondMax Plus9 60/80/120/160/
200GB AT drive should be used on systems that support LBA translation
to ensure the use of the entire capacity of the disk drive. If that is not
possible the following are some techniques that can be used to
overcome this barrier.
• Use a third party software program that translates the hard
drive parameters to an acceptable configuration for MS-DOS.
• Use a hard disk controller that translates the hard drive
parameters to an appropriate setup for both MS-DOS and the
computer system's ROM-BIOS.
• Insert the Cylinder Limitation Jumper (CLJ) on the drive (see
Section 3.3.1.4).
3.7.2

The 8.4-Gigabytes Barrier

Newer BIOS's allow users to configure disk drives to go beyond the
528MB barrier by using several BIOS translation schemes. However,
while using these translations the BIOS using Int 13 functions are
limited to 24 bits of addressing which results in another barrier at the
8.4GB capacity.
To overcome this barrier a new set of Int 13 extensions are being
implemented by most BIOS manufacturers. The new Int 13 extension
allows for four words of addressing space (64 bits) resulting in 9.4
Terrabytes of accessible space.
Whenever possible the Maxtor DiamondMax Plus9 60/80/120/160/
200GB AT drive should be used on systems with BIOS that support Int
13 extensions. If that is not possible the following are some techniques
Maxtor DiamondMax Plus9 60/80/120/160/200GB AT
Installation
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