4.2 Add the Initial RAM Filesystem
One of the easiest ways to authenticate a root filesystem is to include it in the Linux® kernel
binary. Buildroot provides a configuration option for
this:
$ make menuconfig- Go to Filesystem images and
select Initial RAM filesystem linked into linux kernel.
- Go to Filesystem images and
select cpio type, then select Invoke dracut to make a partial
initramfs.
The Linux kernel needs to be manually reconfigured before the initial RAM filesystem works properly. Build the image and test it again to ensure the root filesystem functions correctly:
$ make linux-reconfigure
$ make