this post was submitted on 04 Jul 2026
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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The fat32 formated partitions are EFI System Partitions used to boot your PC. I assume that sda3 is the one Windows created, while a later Linux install created sda5 as an alternative. Yet sda5 doesn't seem to be really used (with that cute 9MB used), so your Linux boot stuff -including a bootloader that would allow you to start Windows (or you picking directly from EFI?)- is probably all sitting alongside Windows' EFI stuff in sda3.
In fact I wouldn't touch anything there without some backup.
I have changed the partitions and all seems to work but I still get the bootloader menu with the Windows option even though there is no Windows partition. Not a huge problem, but it is a little annoying I can't remove references to Windows without risking breaking my setup.