3/18/15

System Compression in Windows 10

As the release of Windows 10 is nearing up, Microsoft is giving more information about the new operating system that is supposed to fit all the devices. In its blog, yesterday, Microsoft explained how Windows 10 uses system compression techniques to save space on devices. Or in other words, how does Windows 10 manage to run using smaller space on local storage in tablets, laptops and phones.

How Windows 10 saves space on devices

Windows 10 uses two distinct factors, so that the operating system takes up as less space as it can. It has to fit on a variety of devices with different storage limits and under those terms, it will not be feasible if the operating system takes up much space. Lower storage space also means faster working of the operating system.

The first of the two factors is file system compression. The second one is a recovery enhancement system that we’ll talk about in the next section.

Windows 10 System Compression

Windows 8.1 achieved significant footprint reduction using Windows Image Boot or WIMBOOT. This feature enabled Windows 8.1 devices to have all the goodness of an efficient compression algorithm without any compromise in responsiveness. Windows 10’s compaction is the evolution of WIMBOOT!

According to Microsoft, Windows 10 employs an efficient algorithm for compression of files. With the current build of Windows 10, the compression algorithms save up to 1.5 GB for 32 bit operating systems. For 64 bit operating system, the compression algorithms free up at least 2.6 GB.

Recovery Enhancements in Windows 10

Normally, hardware vendors use a static recovery image so that users can revert to it when things go wrong. This static recovery image takes up a good amount of space on the hard disk drive or other storage devices. The static recovery enhancements have been eliminated completely in Windows 10 so that it occupies just a little space.

This does not mean that users can no longer revert to the default state when required. The technique has changed, but not the features. The Windows Refresh and Reset features now use a technology that is dynamic. That is, Windows will reconstruct the recovery image using the inbuilt algorithms when required. This way, there is no need to store a static image of Windows 10. This removal of static image and building recovery images dynamically reduces the storage needssignificantly in storing the operating system.

Normally, the static images take up too much space and by using dynamic recovery, Windows 10 will save up to 12 GB of storage space on hard disks drives or other drives from where it is running. Thus, the space released by operating system will be used by users for storing documents, photographs, videos and music etc.

Smart System Compression in Windows 10

System compression of files in Windows 10 need not affect the performance of the operating system in a negative way. For the purpose, the compression algorithms are used that calculate how much to compress the files without posing any risk to the efficient working of Windows 10.

For example, Windows 10 takes into account the amount of RAM available and the speed of processor on the computer being used. Based on these two factors, the system compression algorithms in Windows 10 check out how much time it takes to decompress the files for processing them. The time taken to retrieve the file, decompress them and process them should be much smaller than what a human can perceive. The compression algorithms in Windows 10 do just that. This means that the amount of compression would be different on different machines. A machine with a faster processor will see low usage of space by operating system while on a slow computer system, the operating system will take up more space.

Thus, not only does Windows 10 make use of intelligent algorithms for reducing system footprint, it also saves space for Windows apps. If the system files are compressed, app files are also compressed the same way so that they can provide more on systems with lower storage capacities.

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