Re: 10.04 desktop installer doesn't see all partitions
olffred is absolutely correct, if you are not using raid but your drives contain old meta data, that data must be erased before the drive(s) will be treated as non raid under 10.04.
But, be very careful that your drives are not actually raid drives because the act of erasing the meta data will destroy all the data on those drives. Check for what is listed in /dev/mapper. If it contains nothing or only symbolic link for only the raid drive as a whole (ie /dev/mapper/nvidia_aebhdfib) and not individual partitions (ie /dev/mapper/nvidia_aebhdfib1 ...2 ...5 etc) then the raid is empty and it would be safe to erase. To be safe run sudo dmraid -ay ffirst in a terminal before checking /dev/mapper. I have see incidents of people who didn't know, even insisted they had no raid drives, destroy their data.
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
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