My understanding of NFS boot

Following the link 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)


  • 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

  1. Documentation/early-userspace/buffer-format.txt for CPIO format

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