American Megatrends 39 Series, Руководство пользователя

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Chapter 4 - AMI BIOS Features
54
Standard Options, Continued
T i T i m e C o n f i g u r a t i o n m e C o n f i g u r a t i o n
Move the cursor to the Time field via
→
,
←
,
↑
, or
↓
and set the time
by pressing <PgUp> and <PgDn> to change values.
H a r d D i s k C o n f i g u r a t i o n H a r d D i s k C o n f i g u r a t i o n
Hard disk drive types are identified by the following parameters:
Parameter Description
Type The number designation for a drive with certain identification
parameters.
Cylinders The number of cylinders in the disk drive.
Heads The number of heads.
Write
Precompensation The size of a sector gets progressively smaller as the track
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.
Landing Zone This number is the cylinder location where the heads normally
park when the system is shut down.
Sectors The number of sectors per track. Hard drives that use MFM
have 17 sectors per track. RLL drives have 26 sectors per
track. ARLL and ESDI drives have 34 sectors per track. IDE
and SCSI drives may have even more sectors per track.
Capacity The formatted capacity of the drive based on the following
formula:
Number of Heads x Number of Cylinders x Number of sectors
per track x 512 bytes