RAM disk behavior and root_device

[Matthew Patton <matthew.patton@ra.pae.osd.mil>]

Can anyone provide any insight as to what/where I need to look to get a
RAMDISK configuration to boot into multi-user mode automatically? I've got
all of the necessary init/rc files but they are apparently ignored.

Also what is "root_device"? I thought I'd see rd0 as the device but that is
apparently not the case. Does the entry

root_device / ro,nosuid

make sense as an /etc/fstab entry?
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"It's not amazingly fast or amazingly small or amazingly clever.
 It is boring."
  -- Bruce Schneier on NSA's much vaunted SkipJack algorithm