How do I modify a ramdisk image?
Most Linux systems have the ‘loopback device’ driver compiled in, you will need to use it. If the system you are using doesn’t have it, then you’ll have to compile a new kernel with loopback support to modify any images. The command line to mount the image is ‘mount -o loop -t ext2 filesys mnt’ where ext2 is the filesystem of the ramdisk (might also be minix), filesys is the image (ungzipped) and mnt is a directory for a mount point.
