I have a 4MB ramdisk file that I want to add stuff to. I'd like to extend
it to 8MB. How should I go about doing so? I've used "dd" to create an 8MB
file, but I can't seem to copy the original ramdisk into the extended one
with the behavior I want. When I use "cat" or "dd" to try and copy the
contents, my 8MB file gets re-sized to a 4MB file.

TIA,
Tim