Dear Hughes, Thank you for your reply! As you metioned I installed device driver when I installed RHEL 4.0 U1 by typing "linux dd" and inserting device driver CD according to X4100's installation manual. I just intalled RHES 4.0 U1, not updated anything. So the running kernel version is kernel-smp-2.6.9-11.EL as shown below. [root@atlas ~]# uname -a Linux atlas 2.6.9-11.ELsmp #1 SMP Fri May 20 18:25:30 EDT 2005 x86_64 x86_64 x86_64 GNU/Linux Thanks a lot! Sungsoo Kim ----- Original Message ----- From: "Johnny Hughes" <mailing-lists@xxxxxxxxxxxx> To: "CentOS ML" <centos@xxxxxxxxxx> Sent: Saturday, January 07, 2006 7:30 PM Subject: Re: Can I install CentOS 4.2 on Sun X4100? On Sat, 2006-01-07 at 12:47 +0900, Sungsoo Kim wrote: > Hi, all! > > I want to change current RHEL 4.0 ES into CentOS 4.2 on Sun X4100 server. > The server has SAS SCSI based two 2.5" hard disks. > I could only install RHEL 4.0 Update 1 because the server is equipped with > RHEL 4.0 Update 1's device driver only. > This means that you installed a driver when you installed the OS ... do you still have the RHEL kernel what shipped with update 1 .. or have you upgraded the kernel since then. Have you done any other updates (besides the kernel) since update 1? What is the output of this command: uname -a > I've included below the boot process messages concerned with SCSI controller. > If it's possible for me to install CentOS 4.0 on my X4100, I am ready to > switch to it. > > TIA > > > Sungsoo Kim > > > ------------------- > > SCSI subsystem initialized > Fusion MPT base driver 3.02.18 > Copyright (c) 1999-2005 LSI Logic Corporation > ACPI: PCI interrupt 0000:02:03.0[A] -> GSI 28 (level, low) -> IRQ 209 > mptbase: Initiating ioc0 bringup > ioc0: SAS1064: Capabilities={Initiator} > Fusion MPT SCSI Host driver 3.02.18 > scsi0 : ioc0: LSISAS1064, FwRev=01040000h, Ports=1, MaxQ=203, IRQ=209 > Vendor: FUJITSU Model: MAV2073RCSUN72G Rev: 0301 > Type: Direct-Access ANSI SCSI revision: 04 > SCSI device sda: 143374738 512-byte hdwr sectors (73408 MB) > SCSI device sda: drive cache: write through > sda: sda1 sda2 sda3 > Attached scsi disk sda at scsi0, channel 0, id 2, lun 0 > Vendor: FUJITSU Model: MAV2073RCSUN72G Rev: 0301 > Type: Direct-Access ANSI SCSI revision: 04 > SCSI device sdb: 143374738 512-byte hdwr sectors (73408 MB) > SCSI device sdb: drive cache: write through > sdb: sdb1 > Attached scsi disk sdb at scsi0, channel 0, id 3, lun 0 > _______________________________________________ More important than anything else is figuring out what kernel you need to use. There is a forzen CentOS-4.1 tree at http://vault.centos.org that has all the 4.1 kernels. (In CentOS ... 4.0 is the original release, 4.1 is update 1, 4.2 is update 2, etc.) After the kernel issues are defined, a plan for doing a switch can be put together. Is there a driver source so that you can build a new driver for new kernels (if required)?