Quoting iagosineiro@yahoo.es:
Now when I boot it didn't boot correctly. Looking for in Internet (http://kbase.redhat.com/faq/FAQ_46_4969.shtm) I guest that I have to rebuild the initial ramdisk to contain the proper kernel modules for the adaptec controller. But what is the kernel module for 2110s in kernel 2.6.x? I also have to adding a line in /etc/modprobe.conf, but I don't know the format for that.
Newer Adaptec RAID controllers usually use either aacraid or i2o_block driver (the DPT I2O based controllers). If your's is using aacraid, you'll see the volumes as /dev/sd*. If it's using i2o_block, than you'll see the volumes under /dev/i2o/hd*. Try booting off installation CD into rescue mode and see what modules get loaded into the kernel.
Word of warning, i2o_block device driver seems to numerate drives in different order than BIOS, and depending how it is loaded it might numerate them differently (for example, I always get different order in rescue mode than when system is booted normally). In some cases, you'll need to instruct your boot loader what the BIOS thinks is the first drive (for example, I had trouble with LILO and this controller in the past because of that).