||04-01-2013 08:15 PM
Not quite sure about Vector, but in general the method of installation differs between live-media and installer-media. Usually live-media make a copy of the live-filesystem to the harddisk (and make necessary changes to the configuration afterwards), while installer-media install the system using packages. Both methods have done and upsides: While copying the file-system is in general a very fast way to install a system the problem here is that you have a pre-configured system, while the package-based approach of installer-media is in general slower, but gives you much more flexibility, for example with changing the installed packages before the install or using network based installation methods with always up-to-date or custom compiled packages.
So, if you want to make a fast standard installation of your distribution the live-media approach is usually preferable, while the installer-media solution is better for customized installations. For example, back in my Debian times I used the net-install medium to just install a base-system and then I used a pre-configured package-list together with a local package cache to complete the installation. This way my installation contained exactly the packages I wanted, in the newest version and an installation never took longer than half an hour, configuring the system to my needs inclusive. I could have taken the time to create a custom live-medium for the same installation, but this would soon lead to outdated packages that have to be updated after the installation.