TYAN TIGERCUB ATX Manual page 45

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 recom-
mend 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:
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.
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.
Cyls: Number of cylinders
Head: Number of heads
Precomp: Write precompensation cylinder
Landz: Landing zone
Sector: Number of sectors
Mode: Auto, Normal, large, or LBA
Auto: The BIOS automatically determines the optimal mode.
Normal: Maximum number of cylinders, heads, and sectors
supported are 1024, 16, and 63.
Large: For drives that do not support LBA and have more
than 1024 cylinders.
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