FTB Not Detecting RAM

[Remikzfully]

So, I go to options to see that it stopped detecting my RAM.
I have 6 GB RAM.
I gave 4 GB to FTB a while ago and now it set to 1 GB MAX.
Why?

Pl0x help.

 

[Ashzification]

Do you have a 32 bit OS?
Do you have a 64 bit OS, but 32 bit Java installed?

32 bit Java can't read more than 1 GB of RAM.

 

[Remikzfully]

I have 64 bit OS, I installed 64 bit java again, thanks, worked like a charm.