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I would like to know which files or script during boot up of Ubuntu 12.04 Desktop (64Bit) sets the amount of ram to allocate to the Ubuntu Live CD file system.

I have 32GB of ram and when I boot into Ubuntu it claims 50% for the file system. So to provent this I would like to fix the amount of ram used by the Live cd to 2GB.

I should point out that such a change will then be used to remaster the live cd to a customised version.

Any help as where I should look or what I should change would be of great.

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