Peak Peak 632A, User Manual

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PEAK 632A User Guide
BIOS Setup
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The maximum HDD size supported by LBA mode is 8.4 Gigabytes which is
obtained by
the following formula:
no. Cyclinder ( 1024)
x no. Head ( 255)
x no. Sector ( 63)
x bytes per sector ( 512)
8.4 Gigabytes
LARGE mode
Extended HDD access mode supported by Award Software.
Some IDE HDDs contain more than 1024 cylinder without LBA support (in
some cases, user do not want LBA). The Award BIOS provides another
alternative to support these kinds of HDD!
Example of LARGE mode:
CYLS. HEADS SECTOR MODE
1120 16 59 NORMAL
560 32 59 LARGE
BIOS tricks DOS (or other OS) that the number of cylinders is less than 1024 by
dividing it by 2. At the same time, the number of heads is multiplied by 2. A
reverse transformation process will be made inside INT13h in order to access the
right HDD address the right HDD address!
Maximum HDD size:
no. Cyclinder ( 1024)
x no. Head ( 32)
x no. Sector ( 63)
x bytes per sector ( 512)
1 Gigabytes