Hello, I have recently tried to make a RAID array using the d-i but i have had exactly the same issue (with latest version of the d-i). I finally choose to setup the RAID array after the installation using this documentation (in french, sorry, but it isn't really difficult to understand for english people) :
http://www.labo-linux.org/index.php?page=essentiels&id=951&p=2 Regards, -- Arnaud Fontaine <[EMAIL PROTECTED]> - http://www.andesi.org/ | GPG Public Key available on pgp.mit.edu | Fingerprint: D792 B8A5 A567 B001 C342 2613 BDF2 A220 5E36 19D3
pgpLkR79MLRTR.pgp
Description: PGP signature