Hi Chris,
PXElinux can boot XEN throw "mboot.c32" loader, see GENTOO Linux notes on this
theme:
http://gentoo-wiki.com/HOWTO_Xen_and_Gentoo#Alternative:_PXELinux
-----------------
Latest PXElinux will is 3.30 and is part of syslinux package at:
http://syslinux.zytor.com/index.php
Changes in 3.0.8
COM32 module to boot Multiboot systems, including Xen. See
com32/modules/mboot.doc.
Nice day
Rudolf
------------ Původní zpráva ------------
Od: Chris Johns <[EMAIL PROTECTED]>
Předmět: [rhelv5-beta-list] PXE booting & kernel source
Datum: 18.9.2006 23:31:27
----------------------------------------
Hi,
I installed RH EL5 Beta 1 on a Dell 2650 system (dual CPU Xeon), and it
boots fine from disk using the GRUB bootloader.
However, when I attempted to PXE boot it using the kernel that the
installer placed in /boot as the default kernel, along with an initrd
image that we custom-build using a procedure that works fine for ELAS3
and ELAS4, PXE fails to recognize the kernel as a valid file.
Normally, the compressed kernel (vmlinuz) looks like this:
ELAS4u4
# file vmlinuz-2.6.9-42.ELsmp
vmlinuz-2.6.9-42.ELsmp: x86 boot sector
However:
EL5b1
# file vmlinuz-2.6.17-1.2519.4.21.el5xen
vmlinuz-2.6.17-1.2519.4.21.el5xen: gzip compressed data, from Unix, max
compression
and the PXE loader has a cow:
PXELINUX 3.11 2005-09-02 Copyright (C) 1994-2005 H. Peter Anvin
Loading
Invalid or corrupt kernel image.
boot:
I think it concerns the following kernel build options (new to ELAS5),
and which appear with the following values in the config file in /boot:
CONFIG_RELOCATABLE=y [default is n]
CONFIG_PHYSICAL_ALIGN=0x400000 [default is 0x100000]
CONFIG_BLK_DEV_RAM_BLOCKSIZE=4096 [default is 1024]
The problem is, none of the 5 ISOs that I downloaded from Red Hat's site
has the kernel source code, so I can't rebuild the kernel to see if it
helps. Without that, I'm dead in the water. The EL5 Beta announcement
email says that binary and source ISO images are available, but I only
see 5 binary ISOs and a Docs ISO.
I'd like to know how to obtain the kernel source so that I can try the
different options, and also whether Red Hat intends to make the default
kernel non-PXE-bootable, or if this is just an oversight during the Beta
period?
Thanks,
Chris Johns
Cassatt Corporation, Mendota Heights, Minnesota
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