Comment 11 for bug 122402

I have downloaded and checked an ubuntu-9.04-alternate-amd64.iso CD and see this bug too.
Steps to reproduce:
1. Download ubuntu-9.04-alternate-amd64.iso

2. Create a bootable USB (or HDD) using unetbootin from this iso

3. Boot a comuter from this USB (or HDD)

4. Process the install to the step "load installer components from cd" (ignoring failed detection of CDROM)

5. Go to console (alt+f2)

6. Mount drive with installer files to the /cdrom:
# mount -t vfat /dev/sdb1 /cdrom

7. Copy folder /cdrom/dists/jaunty to /cdrom/dists/stable (because if we copy ISO to the FAT system via unetbootin, symlink /cdrom/dists/stable converts to empty file) with commands:
# rm /cdrom/dists/stable
# cp /cdrom/dists/jaunty /cdrom/dists/stable -R

8. Go back to installer (alt+f1)

9. Start the step "load installer components from cd" again.

9.1. Solve the unetbootin bug (when copying files, file pool/main/l/linux/fs-secondary-modules-2.6.28-11-generic-di_2.6.28-11.42_amd64.udeb saves as pool/main/l/linux/fs-secondary-modules-2.6.28-11-generic-di_2.6.28-11.42_amd64.ude):
- when we see the error "problem reading data from the CDROM" we goes to console (alt+f2) and type
# cp /cdrom/pool/main/l/linux/fs-secondary-modules-2.6.28-11-generic-di_2.6.28-11.42_amd64.ude/cdrom/pool/main/l/linux/fs-secondary-modules-2.6.28-11-generic-di_2.6.28-11.42_amd64.udeb
after that returns to the installer (alt+f1) and on "Retry" click "Yes".

10. Process next steps, partitioning, etc....
11. On step "Install the base system" we will see the error:
[!!] Install the base system
Debootstrap Error
Failed to determine codename for the release.

And I don't know how I can solve this error. Screenshots of this error is attached