For your information..

A nice article here on the Windows 10 upgrade process.

Give it a good read through because you are going to lose some of your older stuff.

Microsoft persist in quoting this..

  • Processor: 1 gigahertz (GHz) or faster processor or SoC
  • RAM: 1 gigabyte (GB) for 32-bit or 2 GB for 64-bit
  • Hard disk space: 16 GB for 32-bit OS 20 GB for 64-bit OS
  • Graphics card: DirectX 9 or later with WDDM 1.0 driver
  • Display: 1024×600

Note that it is the BARE MINIMUM required, and if you want Windows 10 to work really well, ensure that your machine easily surpasses the list above.

Re the hard disk space:

Even though Windows 10 is generally smaller and leaner than its predecessors, it still needs room to move, to update, to save stuff, so forget the Hard Disk Space line. You will want a partition size of at least 100gb in use or you will be forever running out of free space.