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Open my computer selects and locates the folder or drive
Right click the file, folder, or drive, and click properties
On the general tab, click advanced
From the advanced attributes dialog box -> check compress contents To save Disk Space and click OK.

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Posted by waqasahmad

(1) Open my computer selects and locates the folder or drive
(2) Right click the file, folder, or drive, and click properties
(3) On the general tab, click advanced
(4) From the advanced attributes dialog box -> check compress contents To save Disk Space and click OK.

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Posted by mariuspaul

The Windows NT filesystem (NTFS) supports compression, which mean that one can mark a single file or a folder of files to be compressed. When NTFS compresses a file, then it chops the file up in small fragments and compresses each fragment.

* NTFS compression supports quick random access, because it can easily look up the right fragment.
* NTFS compression can slow down streaming access to files if CPU power is limited, but else NTFS can increase disk performance because decompression is often faster than the hard disk.
* NTFS compression can fail if the file is very large (beyond 100 MByte), because the it has to split the file into many fragments.
* NTFS compression should not be used on files that are already in compressed state like archives-files (ZIP, RAR, etc.) and media-files (MP3, AVI, etc.).

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Posted by sagitraz