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====== My understanding of NFS boot ======

Following the link http://www.faqs.org/docs/Linux-mini/NFS-Root.html for understanding. Finding out needed things.
 - Ethernet (10 or 100Mbit) (CONFIG_NET_ETHERNET) is needed 
 - Correct Ethernet driver (assuming that live-CD will have these things by default )
 - CONFIG_NFS_FS is needed for NFS support (FUSE will be needed in case of )

==== Root file system on NFS (CONFIG_ROOT_NFS) ====
  * why? Can't I mount root filesystem from NFS otherwise?
  * and then what I need to do if I want to mount from HTTP? which option to give in that case?
  * http://www.kernel.org/doc/Documentation/filesystems/ramfs-rootfs-initramfs.txt it was great, cleared up many confusions about initRamFS
  * http://lxr.linux.no/linux/Documentation/initrd.txt
  * Referring http://fxr.watson.org/fxr/source/Documentation/nfsroot.txt?v=linux-2.6 Hoping to get some answers

==== Answers ====
  * It seems CONFIG_ROOT_FS can be entirely ignored :-)
  * It is nothing but automatically mounting the NFS filesystem by kernel
  * All things done by CONFIG_ROOT_FS can be done from initramfs.

===== Further Reading =====
  - Documentation/early-userspace/buffer-format.txt for CPIO format

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