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The maximum number of cylinders, heads and sectors for Normal mode
are 1024, 16 and 63, respectively.
no. Cylinders
(1024)
x no. Heads
( 16)
x no. Sectors
( 63)
x bytes per sector
( 512)
528 megabytes
If you set your HDD to Normal mode, the maximum accessible HDD will
be 528 megabytes even though the physical size of the HDD may be
greater than that.
LBA (Logical Block Addressing) Mode
The LBA mode is a HDD accessing method to overcome the 528 mega-
byte limitation. The number of cylinders, heads and sectors shown on
the screen may not be the actual number for the HDD.
During the HDD accessing, the IDE controller will transform the logical
address described by the sector, head and cylinder number into its own
physical address inside the HDD.
The maximum HDD size supported by the LBA mode is 8.4 gigabytes. It
is obtained by the following formula.
no. Cylinders
(1024)
x no. Heads
( 225)
x no. Sectors
( 63)
x bytes per sector
( 512)
8.4 gigabytes
Large Mode
The Large mode is the extended HDD access mode supported by the
G586VSY AIO system board. Some IDE HDDs have more than 1024
cylinders without LBA support (in some cases, you may not want the
LBA mode). This system board provides another alternative to support
these
kinds of HDDs.
