User`s manual

BIOS User's Manual
5-2
not workproperly. If you are absolutely certain that you
know the drive's PIO mode, select PIO mode 0-4, as
appropriate
CD Select Type . Select CDROM . Click on OK when
ROM AMIBIOS displays the drive parameters.
Entering Drive Parameters
You can also enter the hard disk drive parameters. The drive parameters
are:
Parameter Description
Type The number for a drive with certain identification parameters.
Cylinders The number of cylinders in the disk drive.
Heads The number of heads.
Write The size of a sector gets progressively smaller as the track
Precompensation diameter diminishes. Yet each sector must still hold 512 bytes.
Write precompensation circuitry on the hard disk compensates for
the physical difference in sector size by boosting the write
current for sectors on inner tracks. This parameter is the track
number where write precompensation begins.
Sectors The number of sectors per track. MFM drives have 17 sectors
per track. RLL drives have 26 sectors per track. ESDI drives
have 34 sectors per track. SCSI and IDE drive may have even
more sectors per track.
Capacity The formatted capacity of the drive is (Number of heads) x
(Number of cylinders) x (Number of sectors per track) x (512
bytes per sector)
Date and Time Configuration
Select the Standard option. Select the Date/Time icon. The current
values for each category are displayed. Enter new values through the
keyboard.
Floppy A
Floppy B
Choose the Floppy Drive A or B icon to specify the floppy drive type.
The settings are Not Installed, 360 KB 5¼ inch , 1.2 MB 5¼ inch , 720 KB