Windows 10 disk space

How will I know if my computer can run Windows 10?

System requirements

If you want to upgrade to Windows 10 on your PC or tablet, here’s what it takes.

Latest OS:  Make sure you are running the latest version either Windows 7 SP1 or Windows 8.1 Update.

For Windows 8.1, see the following article:

http://windows.microsoft.com/en-us/windows-8/install-latest-update-windows-8-1

For Windows 7, see the following article:

http://windows.microsoft.com/en-US/windows7/learn-how-to-install-windows-7-service-pack-1-sp1

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:  1024x600

How much actual free disk space is required by Windows 10 setup?

Windows 10 uses approximately 10 GBs of disk space. The minimum disk space available is to facilitate the installation process. Some install files are compressed and need to be expanded during setup. Some files are temporary and are deleted during or after installation. Also, because you might have data and apps on the hard disk, they will be moved around during migration.

Learn more:

http://www.microsoft.com/en-US/windows/windows-10-specifications

My Tablet does not have 16 or 20 GBs of free space and I am not able to free up any additional space. What should I do?

Windows 10 will support systems with compressed installations. Windows 10 can upgrade such systems with as little as 8.5 GBs of free space.

Also see:

How to free up disk space in Windows