Learn about the technologies behind the Internet with The TCP/IP Guide!
NOTE: Using robot software to mass-download the site degrades the server and is prohibited. See here for more.
Find The PC Guide helpful? Please consider a donation to The PC Guide Tip Jar. Visa/MC/Paypal accepted.
View over 750 of my fine art photos any time for free at DesktopScenes.com!

[ The PC Guide | Systems and Components Reference Guide | Motherboard and System Devices | System BIOS | BIOS Settings | Integrated Peripherals ]

Integrated IDE Controllers

This setting enables or disables the integrated primary and secondary IDE/ATA controllers. If you are using an add-in IDE controller card (which there is normally no need to do), or if you are not using IDE devices at all (for example, if you use SCSI devices), you can disable the built-in controller here.

On some BIOSes a single setting controls both the primary and secondary channels; the options in this case are "Disabled", "Primary", "Secondary" and "Both". Other BIOSes have two separate "Enabled"/"Disabled" settings, one for the primary channel and one for the secondary channel.

The default on most systems is to enable both IDE channels. This is usually an acceptable setting for most PCs, but some systems can exhibit strange behavior if the secondary IDE channel is enabled but there are no drives on it; for example, Windows 95 may try to set up a drive controller device on the secondary channel and then get confused when nothing is on it. It is therefore prudent to disable the secondary IDE channel unless you are using it. This will also free up the IRQ used by the secondary channel (IRQ15) for use with other devices, if you need it. See this section in the Optimization Guide for ideas about optimizing IDE channel setup.

Next: Integrated Serial Port 1 / Serial Port 2


Home  -  Search  -  Topics  -  Up

The PC Guide (http://www.PCGuide.com)
Site Version: 2.2.0 - Version Date: April 17, 2001
Copyright 1997-2004 Charles M. Kozierok. All Rights Reserved.

Not responsible for any loss resulting from the use of this site.
Please read the Site Guide before using this material.
Custom Search