Adaptec RAID 2100S Software User's Manual page 22

The settings in this view affect the controller BIOS and all the
Adaptec controllers in your system. To view or change these
settings, highlight Configuration in the Tree View.
The following table illustrates the default settings to be found in the
windows shown in Figures
Controller Options
Enable Bootable CD-ROMs
DOS/Windows 3.1 Cache Setting
Scan Delay (seconds)
SMOR Options
EBDA Relocation
Enable Extended Int13
Enable Bootable CD-ROMs
When enabled, the BIOS attempts to detect a bootable CD-ROM that
uses the El-Torito format. This setting is disabled by default, because
some bootable CD-ROMs contain device-specific boot code that is
not supported by Adaptec controllers.
DOS/Windows 3.1 Cache Setting
This setting determines how the controller responds to Int13 write
commands under DOS and certain operating system installation
programs. The default is Write Through to avoid problems that can
occur during operating system installation if write-back caching is
enabled. After the operating system is installed, you can change to
Write Back caching for improved performance.
Change this setting back to Write Through during future operating
system installs or upgrades to avoid problems.
Note: This cache setting has no effect on controller cache
operation under Windows NT, UNIX, or NetWare.
2-3 and 2-4.
Default
Disabled
Write Through
1
Disabled
Enabled
Storage Manager on ROM
Available Settings
Enabled
Write Back
1, 10, 20, 30
Enabled
Disabled
2-11