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WinBIOS Setup
User-defined drive
If you are configuring a SCSI drive or an MFM, RLL, ARLL, or ESDI drive
with drive parameters that do not match drive types 1-46, you can select the
User in the Type field. You must then enter the drive parameters on the screen
that appear. Refer to Table 7-4 for drive parameter information. The drive
parameters include the following:
7
Parameter
Type
Cylinders
Heads
Write
Precompensation
Landing Zone
Sectors
Capacity
7-8
• Cylinder -- Number of cylinders
• Hd -- Number of heads
• WP -- Starting write precompensation cylinder
• Sec -- Number of sectors
• Size -- Drive capacity
Table 7-4. Drive parameter descriptions
Number for a drive with certain identification parameters
Number of cylinders in the disk drive
Number of heads
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.
This number is the cylinder location where the heads will normally park
when the system is shut down.
This is 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 drives have more sectors per track.
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).
Description
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