Unable to install using hd-media

[bajji sw]

For a CD less install, I downloaded vmlinuz and initrd.gz from
ftp://mirrors.kernel.org/ubuntu/dists/oneiric/main/installer-amd64/current/images/hd-media/

I got the amd64 iso image from
http://cdimage.ubuntu.com/ubuntustudio/releases/11.10/release/ and the checksums match

The install is able to mount the iso image after booting. However, installing the base system fails

Debootstrap error failed to determine the codename for the release

syslog:
Nov 20 22:07:38 main-menu[464]: DEBUG: resolver (libnewt0.52): package doesn't exist (ignored)
Nov 20 22:07:38 main-menu[464]: DEBUG: resolver (ext2-modules): package doesn't exist (ignored)
Nov 20 22:07:38 main-menu[464]: INFO: Menu item 'bootstrap-base' selected
Nov 20 22:07:38 base-installer: error: exiting on error base-installer/no_codename

[ 0.000000] Linux version 3.0.0-12-generic (buildd@crested) (gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3) ) #20-Ubuntu SMP Fri Oct 7 14:56:25 UTC 2011 (Ubuntu 3.0.0-12.20-generic 3.0.4)

[Erich Eickmeyer (eeickmeyer)]

11.10 past EOL.