EPOX EP-GXB-M, Manual, Page: 64 / 90

EP-GXB-M Award BIOS Setup
Page 64
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 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 INT 12h in order to access the right HDD
address!
Maximum HDD size:
no. Cylinder (1024)
x no. Head ( 32)
x no. Sector ( 63)
x bytes per sector ( 512)
1 GigaByte
Note: To support LBA or LARGE mode of HDDs, there must be some software
involved. All the software is located in the Award HDD Service Routine (INT 13h).
It may fail to access a HDD with LBA (LARGE) mode selected if you are running
under a Operating System which replaces the whole INT 13h. UNIX operating
systems do not support either LBA or LARGE and must utilize the Standard mode.
UNIX can support drives larger than 528MB.
Save & Exit Setup
The “SAVE & EXIT SETUP” option will bring you back to the boot up procedure
saving all the changes you just recorded in the CMOS RAM.
Exit Without Saving
The “EXIT WITHOUT SAVING” option will bring you back to normal boot up
procedure without saving any data into CMOS RAM. All old data in the CMOS will
not be destroyed.