If you use Linux as a server, then you probably will not have too much of an issue with booting the system. If you use it as a desktop, particularly on an older machine, then you may notice an absymal boot time. Sure, you could just go and get a soda while the system boots, but you won't always be thirsty. If you want a less patient solution then consider Parallelize. This software was developed by IBM, and comes with some serious install instructions that you need to read before you try to install the software.