Re: Should /boot be ext2, instead of ext4?
Hello,
Le 05/09/2021 à 18:47, J. William Campbell a écrit :
AFAIK, the on disk format for ext4 is the same as
ext2. If the code can read an ext2 filesystem, it can read an ext4
filesystem.
I am not sure about that. AFAIK, some ext4 features such as extents
create a different on-disk format than ext2 or ext3. The ext2, ext3 and
ext4 Linux drivers refuse to mount an ext4 filesystem as ext2 because of
unsupported features.
older u-boots didn't know about ext4,
so when they check the version of the filesystem they see a number that
they don't understand and give up.
IIUC, an ext* filesystem does not have a version number. Instead it has
a collection of "features", some of which are supported only by ext4.
But IMO the real point is : if ext2 is mandatory for /boot when
installing with LVM, why then is it not mandatory when installing
without LVM ?
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