this post was submitted on 05 Mar 2024
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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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If you want to be compliant to the UEFI spec, the partition holding your EFI binaries must be formatted as a file system related to FAT (see https://en.m.wikipedia.org/wiki/EFI_system_partition). This is not something you want for you system drive, so a separate partition makes sense.
Isn't EFI a separate partition? Different from
/boot?They can be the same partition, they are for different purposes though. EFI holds the EFI binaries as the name implies, while /boot holds the initrd, kernel, and the bootloader config files.
If they are the same partition, /boot needs to be formatted as FAT32 and have EFI as a subdirectory. Otherwise they can be separate partitions, either way the partition that contains the EFI directory needs to be formatted as FAT32.