Quartus8.1 Memory Initialization File Warning

Thank you for your help!

First, I generate the ROM module use the QuartusII MeagWizard Plug-In manager.

And I want to describe what I understand about your suggestions:

Every time after a QuartusII software full complie, the content of *.hex file would be modified. It meas that the content of *.hex file is not what I set, it could be any possible data, right?

Second,

To Mschmitt:

Your suggestion "write protect the hex file", do you mean that when I creat the *.hex file, I should then right click the file and set its attribute "read-only" ?

I could not find anywhere in QuartusII8.1 software to set the attribute of the *.hex file---"write protect the hex file".

Third,

To sanmao:

Do you mean that after I complied the project and I could copy my own ROM1.hex to replace the modified ROM1.hex, and the content of my ROM1 module is right what I set(the content of my own ROM1.hex) without complie the project again? I don not understand it clearly!!

Thank you again for your generous help!