DS20E, Alpha Core 1.0 and CentOS 4.2 installers do not boot

[K Hanai]

Hi, 

From: Sergey Tikhonov <tsv at solvo.ru>
> Is it possible that somehow ac1 and centos boot images are corrupted?
> ac2-qboot1.iso is not very different from ac1/centos in terms of booting.

Thank you for your comments.
>From your comments, I suspect the burning device and prepared a cd-r 
with another device. The new cd-r boots the DS20E!!

Thanks much,
K. Hanai