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I have Windows 11 and Ubuntu Desktop 23.10 in a dual boot. Now I want to completely reinstall Ubuntu while keeping Windows 11. I have no idea what to do in the "manual partitioning" step of the installation. Please check the image. Could someone please provide a step by step guidance on what to do?enter image description here

hello
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  • You've not said what Ubuntu product (Server? Desktop? nor which installer you're asking about as there are 3 installers available for Ubuntu 23.10 (two choices for Desktop & one for Server)). If your last system was on nvme01n1p5 then you select it for / and just select your ESP if using uEFI boot (your machine firmware will dictate which drive that's on) & let it go. You don't select format if you want a non-destructive re-install but the effect differs if using Server or Desktop & you didn't specify. – guiverc Dec 04 '23 at 06:25
  • It is Ubuntu Desktop 23.10. I edited my question to make it clear. I appreciate your answer (and it really helps me understand a bit what is going on) but I need more detailed instructions. – hello Dec 04 '23 at 06:52
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    Does this answer your question? How to use manual partitioning during installation? – karel Dec 04 '23 at 06:57
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    FYI: As I stated in my first comment, Ubuntu 23.10 Desktop has two ISO choices which use different installers; the primary ISO uses ubuntu-desktop-installer where as the alternate (also called legacy) uses ubiquity. Thus how it appears will vary based on what Ubuntu 23.10 Desktop ISO you downloaded & use... What you do on both is the same, they just look slightly different (you didn't specify which Ubuntu 23.10 Desktop ISO you're using, and may not have noticed the choices available at download) – guiverc Dec 04 '23 at 07:01
  • Thank you for clarrifying. I am using the primary installer (NOT the legacy one). – hello Dec 04 '23 at 07:12
  • Using Something Else, choose p5 and change to make it / (root) and ext4. Check box to format. That is all you need as new user. If more experienced, then separate /home or data partitions may be additional choices, but you need to have some idea of how much data you will have in your /home, first. – oldfred Dec 04 '23 at 15:23

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