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I have a Ubuntu and Windows on my machine and I have to reinstall Ubuntu without losing any of my data, /home folder, but reinstall ubuntu option is grayed out for some reason.

What should I do in order to reinstall it without losing files and programs?

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You can click on "Something Else" and then manually reinstall it. Choose the same paritions for the same mounts you had before such as /home and root (/) and just make sure the format checkbox is NOT checked. It will reinstall overtop of everything (overwrite) but won't delete anything. Of course as always, you should backup your /home folder before, just in case

  • how to know which is the boot partition when having for example /dev/nvme0n1 (seems the whole disk), /dev/nvme0n1p1(fat32) and /dev/nvme0p2 (ext2)? It is asking foe the Device for boot loader installation – Francesco Boi Aug 2 at 16:45

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