<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <style type="text/css">body{margin-left:10px;margin-right:10px;margin-top:0px;margin-bottom:0px;}</style> </head> <body marginleft="10" marginright="10" margintop="0" marginbottom="0"> I have a running RHEL ES v3 system that I want to upgrade to ES v4. It is a test/experiment system, so I plan to wipe it clean and start over with v4. I get a "kernel panic" error during the install process. I downloaded the "Easy ISO" images and made CDs. When I boot from disk 1, I press <enter> when prompted, and a few seconds later the system kernel panics. The RedHat knowledgebase describes a similar problem with v3 on some IBM hardware configurations, and suggests running the install with the command: "linux mem=<some memory size>" to limit the amount of RAM used during the install. When I do that, I get the message: "Uncompressing Linux...OK, booting kernel". The computer then hangs at that point. No further activity is seen on the screen or CD drive. Running the installation with the "noprobe" option does not seem to change anything. The CD boots correctly on another computer and passes the media check. The old v3 install disks work correctly on my target system. There seems to be some interaction between the v4 installation disk and that hardware configuration. The hardware is an HP Pavillion P4-2.6GHz with 1GB RAM. The CD drive is a CD-RW IDE. I can't find anything else in web searches. What else can I try? bkg </body></html>