I am trying to install Ubuntu Server 12.04 LTS on a server that only has USB boot capability (no cdrom, no pxe). I have tried the 3 following tools, but they have all failed:

1. Linux Live USB Creator 2.8.27: Fails when the installer gets to "Load installer components from CD"


2. Universal USB Installer 1.9.5.2: Failed fairly early trying to mount /mount/casper (or something like that)


3. UNetbootin (no version info): Failed when the installer gets to "Load installer components from CD"

How do I (from Windows 7 x64) prepare the ISO on to a USB drive to allow me to install Ubuntu?

I have checked the md5sum of the downloaded Ubuntu Server iso file and it is good.

EDIT:

I have checked the install log (/var/log/syslog) to see why it fails and this is what I see:

anna[9142] WARNING **: package retrieval failed

cdrom-retriever: error: Unable to find 'pool/main/l/linux-lts-saucy/block-modules-3.11.0-15-generic-di_3.11.0-15.25~precise1_amd64.udeb'

Checking that folder, the closest resembling file is this:

/cdrom/pool/main/l/linux-lts-saucy/block-modules-3.11.0-15-generic-di_3.11.0-15.25~precise1_amd6.ude

The only difference is 'amd64' is 'amd6' and '.udeb' is '.ude'.

As more than 1 tool generates this error, could this be a mastering error in the 12.04.4 amd64 Ubuntu Server iso file?