The existing system specs are to be checked before downloading the consumer preview version of Windows 8 (beta).
The machine should be equipped with 1 GB of RAM, 16 GB of hard disk space and 1 GHz processor to handle Windows 8. The minimum RAM requirements are 2 GB in case of installing the 64-bit version of Windows 8.
The Widows 8 Setup program can be downloaded as the default option or ISO Image can be downloaded.
It may be noted that that the installed software program will only be preserved if Windows 7 is being upgraded to Windows 8. If Windows 8 is installed on top of Windows XP or Vista, only the files will be preserved and not the various software programs on the disk.
Download ISO Image of Windows 8 if the computer has an x64 processor but is running the 32-bit version of Windows or/and installing Windows 8 on the Mac using Boot Camp software or to run Windows 8 as a Virtual Machine inside the existing copy of Windows.
Windows 8 can be installed side-by-side as dual-boot or as a virtual machine to run it inside the existing Windows just like any other software or as the main OS .