Hi everyone, My email server is running CentOS 3 and I can't upgrade it to CentOS 4 using the CD's. At first I thought it was the old Megaraid card (that's no longer supported), so I replaced that with a new card. I've tried ISO's from CentOS 4, 4.1 and now 4.2 which I've tested and booted in other machines. Just not this one. I've never had a problem like this before so I'm not sure what information you need to help me debug this. The server stops right after the line about detecting the AGP video. I have tried booting with noprobe and some other kernel options but nothing seems to work. Please let me know what else I can try to get it to boot. Thanks, Ajay # lspci 00:00.0 Host bridge: Broadcom (formerly ServerWorks) CNB20HE Host Bridge (rev 23) 00:00.1 PCI bridge: Broadcom (formerly ServerWorks) CNB20LE Host Bridge (rev 01) 00:00.2 Host bridge: Broadcom (formerly ServerWorks) CNB20HE Host Bridge (rev 01) 00:00.3 Host bridge: Broadcom (formerly ServerWorks) CNB20HE Host Bridge (rev 01) 00:04.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet Pro 100] (rev 08) 00:05.0 SCSI storage controller: Adaptec AIC-7899P U160/m (rev 01) 00:05.1 SCSI storage controller: Adaptec AIC-7899P U160/m (rev 01) 00:06.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet Pro 100] (rev 08) 00:0f.0 ISA bridge: Broadcom (formerly ServerWorks) OSB4 South Bridge (rev 50) 00:0f.1 IDE interface: Broadcom (formerly ServerWorks) OSB4 IDE Controller 00:0f.2 USB Controller: Broadcom (formerly ServerWorks) OSB4/CSB5 OHCI USB Controller (rev 04) 01:00.0 VGA compatible controller: ATI Technologies Inc Rage XL AGP 2X (rev 27) 02:01.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID (rev 01) NOTE: This is a dual-CPU board with only one CPU. When you throw in another P3 it gets too hot and locks up. # cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 8 model name : Pentium III (Coppermine) stepping : 6 cpu MHz : 999.583 cache size : 256 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse bogomips : 1992.29 # cat /proc/interrupts CPU0 0: 19560150 XT-PIC timer 1: 3 XT-PIC keyboard 2: 0 XT-PIC cascade 8: 1 XT-PIC rtc 9: 6737378 XT-PIC eth0 10: 2612911 XT-PIC megaraid, usb-ohci 15: 0 XT-PIC ide1 NMI: 0 ERR: 0 # free -m total used free shared buffers cached Mem: 1003 989 13 0 436 341 -/+ buffers/cache: 212 790 Swap: 1992 55 1936 # uname -a Linux XXXX 2.4.21-37.EL #1 Wed Sep 28 14:14:23 EDT 2005 i686 i686 i386 GNU/Linux