Installing debian 64 bit on intel laptop from USB flash disk

First of all, in debian, 64 bit for ordinary intel processor is denoted as AMD64
instead of IA64, which is totally different architecture that is die casted
on unpopular intel Itanium processor only.

The procedure is quite simple.

1. Use unetbootin to create a bootable usb disk debian linux installer. I personally
   suggest using [Distribution], then I choose "Debian" and "Stable_HdMedia_x64".
   After the process done, check whether /dev/sdX1 mountable. If not try to plug the stick off
   and plug it in again, hopefully it will be automounted. From this point forward
   I assume we can mount and write into /deb/sdX1, e.g. mount into /mnt/usb/
   
   
2. Download debian-505-amd64-CD-1.iso from debian.org and copy the file into mount point
   of /dev/sdX1 (eg. /mnt/usb/). The installer is supposed to fetch this file from
   the network. But when we cannot configure our laptop to have internet connection
   this should help. Moreover the inetbootin can be configured in Windows!
   

Voila...
We have a USB installer with full support from CD1 of debian lenny.

warning: this procedure is proven doesn't work for squeeze