Windows XP required a minimum of 64 MB of memory. The installer must not only fit in that space, it must be able to run at the same time. Not an impossibility, but a much taller order than running the same/a previous version of the OS directly off the disk.
I have definitely used OS installers that allowed/required CD swaps, though. Maybe Ubuntu at one point? Now that's a slick setup process. Opening Firefox to read the orange site while your OS installs on the same computer is a great trick.
I have definitely used OS installers that allowed/required CD swaps, though. Maybe Ubuntu at one point? Now that's a slick setup process. Opening Firefox to read the orange site while your OS installs on the same computer is a great trick.