I hope you must be talking about the installation time otherwise i don’t think there could be some problem with the OS you have installed. Because see when we install the system for the once at that time it takes such huge time to boot but after fair installation everything works perfectly.
But the main thing over here is like i am not getting whether you are having this problem at the time of installation or after installation you are such time? It would be better to assist you if you simply make yourself clear and then post it again over here. Along with this you should make sure whether the drive is running at the fastest transfer mode possible or not, you should ensure whether the BIOS settings that you have made is also done perfectly.
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