Hello all, I need some explanations concerning the ways to mount rootf during boot. I have read some documents (notably the very useful How to use initramfs by Rob Landley) and dug into the source code, but some doubts remain. If I well understood, there is 2 differents procedures to mount the rootfs: - using the old way: init ramdisk - using the initramfs support (which appears to be really more efficient) The fonction "populate_rootfs()" seems to be a crucial point of the procedure: it calls a first time "unpack_to_roofs()" with __initramfs_start and __initramfs_size as arguments, and if initrd_start is not NULL, calls one more time "unpack_to_rootfs()" with initrd_start and (initrd_end-initrd_start) as arguments. What's really happening during the first unpack_to_rootfs() ? Does the kernel unpack the iniramfs.cpio (created either by supplying a valid cpio one or a config file through CONFIG_INITRAMFS_SOURCE) from __initramfs_start (defined in vmlinux.lds.S)? If I aim to use initramfs support, should I do something with initrd_start/end and CONFIG_BLK_DEV_RAM stuffs? Thanks in advance for your help and clarifications. Regards