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I have my disk divided in two partitions and I think one of them is running windows but I don't know which one of them and how I can delete it. In my boot menu I can see a Windows bootloader which I want to delete but don't know how, I think it may be related because on my bios settings I couldn't find any option to delete it.

Sorry if this question is dumb or if I am using incorrect terms to describe what is going on.

Disks Image:

enter image description here

Boot Menu:

enter image description here

user68186
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nameless
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    I don't see any Windows in your computer. The fist partition is EFI System Partition (also known as ESP). This is a part of the UEFI (what used to be called BIOS). All modern computers has this partition whether it has Windows or not. Your computer won't boot without it. Do not delete this partition!!!! – user68186 Aug 30 '22 at 18:48
  • You're talking about the second Boot Option right? – nameless Aug 30 '22 at 19:12
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    No, the comment above mentions your ESP, the only partition selected (highlighted) in your screenshoot. AGAIN, this is required. That you have a Windows bootloader there alongside Ubuntu means at some point there WERE Windows installed. Surely that entry can be deleted using the efibootmgr tool but probably not worth the effort and risk (deleting the wrong one will make your Ubuntu unbootable). – ChanganAuto Aug 30 '22 at 19:19
  • I agree with @ChanganAuto trying to delete the second boot option is not worth the risk. However, if you want to look into the process see How do I remove Windows from the UEFI boot menu after custom installing Ubuntu?. If you do want to dive into that rabbit-hole, make sure you have good backups of your valuable data, documents, pictures, videos, etc. – user68186 Aug 30 '22 at 19:34

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