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I have a dual-boot system with Ubuntu already installed. I am currently downloading Ubuntu 12.04 and wish to replace the Ubuntu partition which already exists, with the new ISO.

I am currently at the screen where it shows all the different partitions and mount points. I can see there are a few NFTS partitions representing my RAID 0 Windows 7 OS. What im not sure is what I need to do to replace the Ubuntu 10 partition on here? There are so many different partitions I am not sure what to do and to which partition.

I have:


/dev/mapper/isw_dcidgaidc_Linux1 ext4 60628MB unknown

/dev/mapper/isw_dcidgaidc_Linux5 swap 2628MB 0MB

/dev/mapper/isw_dcidgaidc_Linux1 ext4 60628MB unknown

/dev/mapper/isw_dcidgaidc_Linux2p1 swap 2628MB 0MB

/dev/mapper/isw_dcidgaidc_Linux5 swap 2628MB unknown

share|improve this question
Are you looking to start with a fresh OS, or there is the possibility of doing a dist-upgrade that will upgrade your version without having to re-install everything... – Kruug Feb 15 '13 at 22:25
@Kruug I just went to do that, but when I boot into Ubuntu either my version 10 says no root file system is defined? I have grub on here to manage a dual boot with Windows 7. I'd like to keep this ideally. The whole thing is on a RAID 0. I think I need to put the installation CD in again and set one of the above partition roots to be /. – user997112 Feb 15 '13 at 22:29
Would you have more benefit posting this on the Ubuntu Stack Exchange site? – H3br3wHamm3r81 Feb 16 '13 at 5:05

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