Re: 11.04 dmraid does not activate ufter upgrade
I've reported it as a bug but there is no sign yet that anything will be done about it.
I believe that what you will find is that dmraid is uninstalled in the upgrade. I resurrected mine from a live cd by mounting the partition I installed to to /mnt and using chroot to install dmraid. Everything works fine now but that shouldn't have been necessary.
12.10 Quantal w/grub2/Mint13 installed on raid0, Gigabyte AMD MB, AMD 64x4 CPUs at 3.2GHz, 16 GB ram, HD7770 ATI video, dual boot win7 on 64gb ssd and win8 on 1Tb SATA raid. 13.04 installed on raid0 and ssd