Convert GZ to IMG

gz to img conversion is usually done in case when of Linux program on floppy disk (often .gz or .tgz) needs to be converted to .img (floppy disk image) in order to to access them even without physical floppy disk drive.

You can do that on Linux by using the following  command line: dd if=/path/to/input/file.gz of=/path/to/output/file.img