BCM SL620, Руководство пользователя

Страница: 37 / 52

37
4. BIOS Setup
4.3.3 Hard Disks
The BIOS supports up to four IDE drives. This section does not show information about
other IDE devices, such as a CD-ROM drive, or about other hard drive types, such as SCSI
drives.
NOTE : We recommend that you select type AUTO for all drives.
The BIOS can automatically detect the specifications and optimal operating mode of almost
all IDE hard drives. When you select type AUTO for a hard drive, the BIOS detects its
specifications during POST, every time the system boots.
If you do not want to select drive type AUTO, other methods of selecting the drive type are
available:
1. Match the specifications of your installed IDE hard drive(s) with the preprogrammed
values for drive types 1 through 45.
2. Select USER and enter values into each drive parameter field.
3. Use the IDE HDD AUTO DECTECTION function in Setup.
Here is a brief explanation of drive specifications:
Ø
Type: The BIOS contains a table of pre-defined drive types. Each defined drive type
has a specified number of cylinders, number of heads, write precompensation factor,
landing zone, and number of sectors, Drives whose specifications do not accommodate
any pre-defined type are classified as type USER.
Ø
Size: Disk drive capacity (approximate). Note that this size is usually slightly greater
than the size of a formatted disk given by a disk-checking program.
Ø
Cyls: Number of cylinders
Ø
Head: Number of herds
Ø
Precomp: Write precompensation cylinder
Ø
Landz: Landing zone
Ø
Sector: Number of sectors
Ø
Mode: Auto, Normal, large, or LBA
Ø
Auto: The BIOS automatically determines the optimal mode.
Ø
Normal: Maximum number of cylinders, heads, and sectors supported are
Ø
1024, 16 and 63.
Ø
Large: For drives that do not support LBA and have more than 1024 cylinders.
Ø
LBA (Logical Block Addressing): During drive accesses, the IDE controller