You might need to upgrade a few hardware items first also you might upgrade to vista then windows 8
Creating a new partition on your hard drive gives your
future version of Windows 8 a place to live on your drive.
Knowing exactly how much space the OS requires helps you
determine how large to make your partition.
Size requirements don't tell the entire story on their own,
though.
Other factors like drive type and additional storage help
ensure you get the best Windows 8 experience where your hard drive is
concerned.
Size Requirements
Both Windows 7 and Windows 8 have the same system
requirement regarding hard drive space, so if your hard drive can handle
Windows 7, Windows 8 shouldn't be a problem.
For 32-bit versions of the operating system, you'll need at
least 16 GB of available disk space. The 64-bit version requires 20 GB.
Your partition will have to be at least one of these sizes,
depending on your OS version.
The PC Advisor website warns that these are literally the
bare minimum requirements, and using these figures leaves you hardly any space
to save files and install apps or programs.
Size Recommendations
You'll get more out of Windows 8 if the operating system has
enough free space for you to install your favorite programs and apps.
PC World calls this extra space "breathing room,"
suggesting you give your Windows 8 partition at least 30 to 40 GB.
If you're dual-booting with another operating system or
you're accustomed to keeping excess data on a separate partition, 30 to 40
gigabytes should be fine.
If you'd rather have all your songs, videos and PC games on
the same partition as the operating system, consider giving it substantially
more space.
Solid State Drive
Windows 8 works on traditional hard drives with spinning
disks, but it's optimized to run on a solid state drive.
If you've got an SSD, consider putting your Windows 8
partition on that drive.
While any operating system benefits from the speed increase
an SSD brings, ARS Technica specifically recommends this drive type for Windows
8, saying the operating system's "tablet-esque feel and search-heavy usage
model will be much better served by solid-state storage."
Other Requirements
Hard drive space is a crucial system requirement, but others
are just as important.
Ensuring your computer meets the other requirements before
partitioning your drive for Windows 8 saves trouble in case your computer can't
handle the OS.
You'll need at least a 1 GHz processor that support PAE,
SSE2 and NX.
Your computer has to have at least 1 GB of RAM for 32-bit
Windows 8, or 2 GB for 64-bit.
Your graphics card must be at least a DirectX 9-capable card
with a WDDM driver. Also, while you're formatting your drive, format the
Windows 8 partition in the NTFS format.
Storage Spaces
Storage Spaces is a useful Windows 8 feature when you're
working with multiple drives and partitions.
The tool enables you to group drives into one larger storage
space so you don't have to constantly switch partitions and explore different
drives.
For example, if you create a storage space between two 32 GB
flash drives, you'd be able to access it as if it were one larger 64 GB drive.
http://windows.microsoft.com/en-us/windows-8/system-requirements
Microsoft windows 8 system requirements
http://www.pcadvisor.co.uk/features/windows/3358892/windows-8-system-requirements/
PC World windows 8 system requirements
http://www.pcworld.com/article/2012847/how-to-master-storage-spaces-in-windows-8.html
PC World how to master storage space windows 8
http://windows.microsoft.com/en-US/windows/download-shop
