Can raw disk VMDK be immutable?

[Entity]

I can't seem to find the answer to this. I want to use a full raw disk, but I don't want changes to it to be commited to the real disk.
And dumping the disk as a file is not an option because it is too big.

So the question is, can vmdk raw disk be directly immutable?

[Entity]

Oh well, I went ahead and tested it, just doing a safe test with a live cd. It seems that it works ok, data written to the disk was actually being written in a diferential image in the vm directory, and not in the actual raw disc.