NCR S26 - Manual (Page 65)

Basic System Configuration
NCR S26 Hot Plug Server User Guide 4-9
Note: The baud rate maximum value is only for the BIOS POST under
UNIX environment. The system I/O chipset SMC 37C665GT supports up to
115.2 Kbps.
Enhanced IDE Features
This section describes several enhanced IDE features.
Hard Disk Block Mode
The Hard Disk Block Mode function enhances disk performance depending on
the hard disk in use. If you set this parameter to Enabled, it permits data
transfer in block (multiple sectors) by increasing the data transfer rate to 256
bytes per cycle.
If your system does not boot after enabling this parameter, change the setting
to Disabled. This parameter is normally set to Disabled.
Hard Disk Size > 504 MB
This enhanced IDE feature works only under MS-DOS™ and Microsoft
Windows™ 3.x environments. If enabled, it permits you to use a hard disk
with a capacity of more than 504 MB. This is made possible through the
Logical Block Address (LBA) mode translation. Other operating systems
require this parameter to be set to Disabled.
To prevent data loss, keep this parameter to Enabled if you are using a hard
disk with more than 504 MB capacity and was previously configured through
LBA mode. When you use a hard disk configured through the cylinder-head-
sector (CHS) mode, set this parameter to Disabled.
On Board IDE
This parameter permits the IDE to be disabled so that IRQ 14 can be used for
PCI or EISA adapters.