Dell PowerEdge 830 Upgrade the BIOS Before Upgrading Your System (.pdf) - Page 1

www.dell.com | support.dell.com Information Update IDE Device Functionality When a Dell Remote Access Controller (DRAC 4) card is used with any version of Red Hat® Enterprise Linux, the system may lose functionality of IDE devices. To avoid this, pass the following parameter to the kernel command line at system boot: linux ide2=0x1f0 Using this kernel command allows the operating system to access the internal CD-ROM drive as well as the virtual CD-ROM on the DRAC 4. IDE Tape Drives To use an IDE tape drive with your system running Red Hat Enterprise Linux 4, add the following lines to the /etc/rc.local file: rmmod ide-tape modprobe ide-scsi mt -f /dev/st0 stoptions no-blklimits mt -f /dev/st0 stoptions no-blklimits NOTE: An issue exists with IDE tape backup units (TBUs) where you will receive illegal request/invalid command messages on the screen after running an mt command for the TBU. Executing the command mt -f /dev/st0 stoptions no-blklimits twice in the rc.local file will resolve this issue and allow the TBU to work as expected. System Fans Disregard all references to the front system fan as documented under "System Fans" in your Installation and Troubleshooting Guide. A front system fan and a back system fan provide air flow to cool the system. Because the back system fan provides adequate cooling, the front system fan has been removed. July 2005