Comment 2 for bug 143963

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Atis (ubuntu-atis) wrote :

I also experienced "Failed to determine the codename for the release" after sw RAID setup using 8.10 Alternate CD.

I found out that this was because cdrom device changed at some point of RAID setup. My solution was:

* Open terminal (F2)
#mount
  lists /dev/scd0 on /cdrom
#umount /cdrom
#mount /dev/scd1 /cdrom

scd1 was only one found after entering /dev/scd[TAB].

* Return to menu and select "Rescan cdrom"

Suggestion would be to re-mount cdrom after RAID setup is done.