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my current partition setup

I want to install latest Ubuntu 12.04, once it gets released, on top of my actual 10.10. The main reason is that I get the "not supported" message, and cannot upgrade to newer distributions through update manager, because I could never solve some errors, so I want to do a fresh install

Please help me with some questions:

1) How should I do to reinstall 12.04 over my 10.10 without erasing /dev/sda3 contents, which stores all the backup info? (see image)

2) Are the partition sizes shown ok or should I increase/decrease any?

3) Is ok to format only /usr /var /tmp and /home? Should i format another to do a clean install?

4) What will happen with grub and other things when I install 12.04 over actual 10.10? Should I remove grub before launching installation?

Thanks a lot in advance,

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up vote 1 down vote accepted

When you run the installer, choose the advanced partition option. You'll have to re-specify all your mount paths (/dev/sda1 as /, /dev/sda8 as /home, etc.). Select to format sda1. Also, reformat /usr, /var, and /tmp (or get rid of them altogether). Do not reformat /home, or you'll lose all your data!

I would use only two partitions: / and /home. More than that is overkill in my opinion unless you have very specific needs and are running a server. I recommend resizing things such that the space taken by /usr, /var, and /tmp is part of the / partition. Having many partitions really takes away from your ability to use your disk flexibly.

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Thanks, I did what u wrote, all went ok, Ubuntu didn't format my ntfs partition, but grub didn't work. I had to re-install it again with liveCD, and all working great now. Thanks – Enrique Apr 20 '12 at 15:48

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