What is the XP system quick release and slow install?

Np980 asks: The tiger is very good, I am a rookie. I can see that there are several XP installation disks on the Internet. I can understand things like SP3, but what about the fast and slow versions? the difference? Which one is better? Please also advise a lot of quick-loading. Generally speaking, it refers to a quick installation mode similar to the GHOST system. Slow loading refers to the normal and traditional installation method. For XP, if the producer's technology is too good, then fast and slow loading is relatively stable, but the quality of mod XP is not good, in general, I still recommend that you use the system of "slow install", honestly Install it. Spend more than ten minutes, maybe you can reload it less often; sharpen the knife without cutting the wood.