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I'm planning on building my desktop computer to have a ramdisk. At the moment my pc has 4 gb ram, and I was thinking if it is possible to go beyond 4 gb and use the extra ram as a ramdisk.

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Yes. It looks like you can: http://www.cyberciti.biz/faq/howto-create-linux-ram-disk-filesystem/ You would have to find the device names of the extra RAM and then follow that tutorial or one that is similar.

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  • The default ramdisk size is 64M so you would need to use the ramdisk_size= kernel argument to increase it. – psusi Jun 19 '12 at 3:13
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You are better off letting the kernel manage the ram for you. It will allocate the ram to applications that need it ( up to 3GB per process ), and use any free ram to cache files automatically.

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