On Sunday, 5 April 2020 13:56:55 BST Ashley Dixon wrote: > On Sun, Apr 05, 2020 at 01:52:52PM +0100, Neil Bothwick wrote: > > This isn't strictly true, the ESP must be vfat, but you can still have an > > ext? /boot. However, it generally makes sense to have the ESP and /boot > > as the same partition, that's how I generally do it. either way, the > > handbook appears to need updating in this respect. > > Sorry, my mistake. I wonder, would there ever be any valid reason to have > the E.S.P.\ and /boot as different partitions ?
Having two separate partitions for the same reason sounds superfluous, but there may be special reasons. For example, you may want to have separate OS installations and each with their own standalone /boot partition. When you uninstall one OS you won't have to fish into the EFI Boot partition for any entries specific to this OS. These days most OS tend to behave and install their boot manager/kernel images into separate subdirectories within the EFI Boot partition - but there are no guarantees. What if rogue-OS decides to install its vmlinuz ontop of your own images, without even asking first? Perhaps you could try chainloading various boot managers to try them out, so the EFI firmware could boot GRUB, which could chainload rEFInd, which could chainload C:\boot\bcd.exe, etc. After you finish with your experiment you could decide to remove a particular /boot partition with its boot manager altogether. Tenuous, I know, but I'm trying to think for reasons to keep a separate /boot partition, without actually having a need for it myself. ;-)
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