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Detailed descriptions
16.5 BIOS Setup
Type
Multi-Sector
Transfer
LBA Mode
Control
32-bit I/O
Transfer
Mode or Ultra
DMA Mode
168
[User]
Select "User" to enter a user-specific definition of the hard disk
type. Configure all the other options, for example, Cylinder, Heads,
Sectors/Track, or other properties of the hard disk drive.
[Auto]
The parameters which you can select in this dialog are usually
saved to the respective IDE drive. The "Auto" setting in the "Type"
field means that these values are automatically read from the drive
and written to memory.
If Type is selected for a drive that does not exist, a timeout is
triggered within approximately 1 minute and the entries remain
unchanged. It makes sense only to set "Auto" for interfaces to
which a drive is connected.
[CD/DVD-ROM]
CD/DVD-ROM is connected
ATAPI
A removable data volume is connected
Removable
None
Select "None" if you have not connected a disk drive. This setting
reduces system waiting time.
The number of blocks (sectors) transferred per interrupt are defined at the "Multi-
Sector Transfer" option. The value depends on the drive and should only be set by
way of "Auto" setting at the "Type" field.
Disabled
2, 4, 8, 16 sectors
The "Enabled" setting at the "LBA Mode Control" (enabled, disabled) option means
that hard disk capacities greater than 528 MB are supported. The value depends on
the drive and should only be set by way of "Auto" setting at the "Type" field.
The type of access to the drive is determined in the 32-bit I/O field
Disabled
16-bit access
Enabled
32-bit access (default)
Define the data transmission rate of the interface in these fields. The value depends
on the drive and should only be set by way of "Auto" setting at the "Type" field.
Exit the submenu by pressing ESC.
SIMATIC Rack PC 847B
Operating Instructions, 06/2008, A5E02203168-01
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