Unable to boot after upgrading a Raid1 system

Hi,
	I have upgrade my system with 3 Raid partitions from Red Hat 9 to
Red Hat Enterprise Linux AS, and after upgrading successfully the system say


---
Md: autodetecting Raid Arrays
    autorun ...
    ... Autorun done
Md: autodetecting Raid Arrays
    autorun ...
    ... Autorun done
Md: autodetecting Raid Arrays
    autorun ...
    ... Autorun done
Reading block devices
EXT2-fs: unable to read superblock
Iofs_read_super: bread failled, dev=09:00, iso_blknum=16, block=32
EXT3-fs: unable to read superblock
Kernel panic: VFS: Unable to mount root fs on 09:00


I have booted the system with the Install CD en linux rescue mode and I see
three raid 1 well syncronized and it seems to be all ok in lilo.conf.
Somebody can appoint what can be happening and how to solve this problem??

Thanks in advance.

Saludos,
                M.A.

------------------------------------------------------------------
Miguel Ángel Martínez Ezquerro      |   Universidad del País Vasco
CIDIR Guipúzcoa (UPV/EHU)           |   E-mail: scsmaezm@sc.ehu.es
P.M Lardizábal,1 (Ed. F.Informática)|   Tel...: +34 943 018005
20018 San Sebastián (SPAIN )        |   Fax...: +34 943 015590
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