memdisk

[Mark Cross]

I found that there is a file called memdisk.mod created in the grub 
directory.

I wonder if this is a file to load disk images equivalent to the memdisk 
from 
isolinux.

If so, how is it used?

insmod memdisk <diskimage>

If it is a module to access the internal memdisk stored in core.img, then it 
is not useful for me.

Thanks.