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Copy OS to tmpfs from initramfs

I am putting together a new server with 64GB of RAM and I would like to copy the whole Linux OS into RAM from the disk and run the operating system solely from RAM.

How can I do this?

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    you mean, like a ram disk ? -- I wouldn't bother to be honest, linux will cache into ram all the files it uses most often and is really very good at cache management.
    – Sirex
    Feb 21, 2012 at 10:14

1 Answer 1

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Most Live CDs have an option to 'Run from RAM'.

You can find an incomplete list at http://en.wikipedia.org/wiki/List_of_Linux_distributions_that_run_from_RAM

Technically, other distributions can be made to boot from RAM as well (also referred to as "RAMboot", "toram" or "copy2ram").

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