But if a partition has near 20-30 GB and on storage limits, Windows 10 has a special feature** that will automatically compress some system files to keep working fine. We also tested Windows 10 version 2004 (Pro edition 64-bit) on M.2 SSD it took similarly around 24.5GB and 25GB with Google Chrome installed.Īt least 20+ GB will be used on your windows installation partition. We installed Windows 10 on C:/ with 50GB+ Free Space and it took roughtly 25GB (24.4GB to b exact.

^^ This will applies to you when Windows is installed on C:/ drive which is just 20GB.įigure 1. For this test, we also installed Windows 10 on a partition that was 12GB in size and it occupied around 11.6GB leaving just 300MB.

Tested with: Windows update.Ī clean or fresh Windows 10 installation size took 11.6 GB, though recommended free space is 16 GB for 32-bit OS and 20 GB for 64-bit OS, it is advisable to have a partition with more free space so that you can install more software and games. Windows 10 Install size on Storage Test 1 C:/ Drive is 20GB or less. If you have recently upgraded to a new year Windows 11 version here is how you can free up space. But remember once you enable the internet connection, Windows automatic update will run in the background and download and install all the patches and updates, which can quickly fill up your free space. While this is similar to the storage space Windows 10 takes. Windows 11 Pro English language version 22H2 takes little more than 30GB. Windows 11 storage occupied after install We recommend that you clean-install Windows 11 every 6 months.

Download windows pro 10 64 bit iso