Its the OS that takes up a huge chunk of space everytime, and keep on getting fatter with time. While this may not be of huge importance for Desktops running with terabytes of storage space, Laptops and Tablets which come with comparatively less storage space will have the most benefit.
Microsoft shared that Windows 10 development team is already using a new compression algorithm which now only reduces the amount of space used for the OS, but also get rids of the recovery image that is stored in the PCs. This will become an incentive for PCs with less internal storage where they could get back around 10 GB of storage back after installation.
With current builds, Windows can efficiently compress system files. That gives back approximately 1.5GB of storage for 32-bit and 2.6GB of storage for 64-bit Windows. Phones will also be able to use this same efficient compression algorithm and likewise have capacity savings with Windows 10.
We are also redesigning Windows’ Refresh and Reset functionalities to no longer use a separate recovery image (often preinstalled by manufacturers today) in order to bring Windows devices back to a pristine state. This reduces Windows’ storage footprint further as the recovery image on typical devices can range in size from 4GB to 12GB, depending on the make and model. Phones already have a storage-optimized recovery solution, so, unlike compression, this enhancement is only for tablets, laptops, and desktops.
Since the recovery image will be gone, consumers using Windows 10 who want to have a recovery image for their device, in case something goes wrong, can easily make one. Microsoft says:
With Windows 10, you can create your own recovery media and back up the pristine state of the operating system and preinstalled software. If things go wrong and you are unable to refresh or reset your device successfully, you can boot the device using recovery media and reset to the prior pristine state.
If you remember, Microsoft said that the original 64 GB Surface Pro would have only 23 GB of usable free space. Sounds surprising right? because now we have Windows that fits on 16 Gb drives,. Problem is that these are Windows 8.1 devices which WIMBOOT, and Microsoft is looking for a way to get Windows 10 and its compression tech back into place