ramdisk max size limitation?

[Phy Prabab]

Hello,

Is there a limitation to the max size you can create a
ramdisk?  I have a 1.5G system and I am trying to
allocate a 1G RAM disk, yet no matter what I do, the
max I can create and use is 512M.  Is there a way to
get over this limitation?

Thanks for the help!

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