I'd prefer not to have an ISO image 55GB in size, I'd like it to be of just what i have installed which right now is about 900 MB. I tried to 'dd' it but it created a 55GB image (size of the hard ...

An ISO file is a digital copy of a disk image that has been extracted from physical media. Creating ISOs is a great way to archive physical discs, which are likely to degrade over time. You can mount ...