[Xen-users] Error: Bootloader isn't executable when installing Ubuntu 10.04 on CentOS 5.3/Xen 3.0

[Ryan Chan <ryanchan404@xxxxxxxxx>]

I am running Xen 3.0 (64bit) on CentOS 5.3, and I want to install
Ubuntu 10.04 using the steps below:

1. Create a new disk with LVM
2. Downlaod vmlinuz & initrd.gz from
http://archive.ubuntu.com/ubuntu/dists/lucid/main/installer-amd64/current/images/netboot/xen/
3. /usr/sbin/xm create -c /etc/xen/ubuntu.cfg install=true
4. Format the whole disk as EXT3, mount as /
5. The installer show some warnings (randomly, since they are not repeatable)

Deboostrap warning
Warnings: Couldn't download package libnewt0.52

6. The clicked continue, and retry to install the base system again
7. When prompted to choose the kernel, I cannot find xen related, so I
choose linux-generic
8. Everything alright, the installer quit and system halt.
9. I launch the VM using  /usr/sbin/xm create -c /etc/xen/ubuntu.cfg, it show
Error: Bootloader isn't executable

p.s. ubuntu.cfg
==============
name = "Ubuntu"
kernel = "/root/ubuntu/vmlinuz"
ramdisk = "/root/ubuntu/initrd.gz"
vif = [ "mac=00:13:1e:6e:23:e2,bridge=xenbr0" ]
disk = [ "phy:/dev/vg0/ubuntu,xvda,w" ]
==============


Any thing I am missing?

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