Until operating systems start fast and sleep soundly, Linux-based "pre-boot" operating environments are good solutions. Too bad nobody uses them.

All Android operating systems infringe Java API packages, Oracle says Judge asked to block "continued acts of infringement of the Java platform." David Kravets – Aug 13, 2015 1:31 pm | 1.7k ...

VirtualBox not only enables you to run multiple operating systems, but it can also run on multiple operating systems. Oracle offers an OS X version of VirtualBox that runs on versions 10.6, 10.7 ...

Oracle acquired the Java technology when it took over Sun Microsystems in a deal agreed last year. Android is fast becoming one of the most widely used operating systems used in smart mobile phones.