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  2. Disk image - Wikipedia

    en.wikipedia.org/wiki/Disk_image

    A disk image is a snapshot of a storage device's structure and data typically stored in one or more computer files on another storage device. [1] [2] Traditionally, disk images were bit-by-bit copies of every sector on a hard disk often created for digital forensic purposes, but it is now common to only copy allocated data to reduce storage space.

  3. Apple Disk Image - Wikipedia

    en.wikipedia.org/wiki/Apple_Disk_Image

    Apple Disk Image. The icon depicts an internal hard drive within a generic file icon. Apple [1] Disk Image is a disk image format commonly used by the macOS operating system. When opened, an Apple Disk Image is mounted as a volume within the Finder . An Apple Disk Image can be structured according to one of several proprietary disk image ...

  4. Snappy (compression) - Wikipedia

    en.wikipedia.org/wiki/Snappy_(compression)

    Snappy (previously known as Zippy) is a fast data compression and decompression library written in C++ by Google based on ideas from LZ77 and open-sourced in 2011. It does not aim for maximum compression, or compatibility with any other compression library; instead, it aims for very high speeds and reasonable compression.

  5. 7-Zip - Wikipedia

    en.wikipedia.org/wiki/7-Zip

    Website. www .7-zip .org. 7-Zip is a free and open-source file archiver, a utility used to place groups of files within compressed containers known as "archives". It is developed by Igor Pavlov and was first released in 1999. [2] 7-Zip has its own archive format called 7z, but can read and write several others.

  6. Comparison of disc image software - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_disc_image...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate; Pages for logged out editors learn more

  7. Virtual memory compression - Wikipedia

    en.wikipedia.org/wiki/Virtual_memory_compression

    Virtual memory compression. Virtual memory compression (also referred to as RAM compression and memory compression) is a memory management technique that utilizes data compression to reduce the size or number of paging requests to and from the auxiliary storage. [1] In a virtual memory compression system, pages to be paged out of virtual memory ...

  8. FileVault - Wikipedia

    en.wikipedia.org/wiki/FileVault

    The operating system uses an encrypted sparse disk image (a large single file) to present a volume for the home directory. Mac OS X 10.5 Leopard and Mac OS X 10.6 Snow Leopard use more modern sparse bundle disk images which spread the data over 8 MB files (called bands) within a bundle. Apple refers to this original iteration of FileVault as ...

  9. Tor (network) - Wikipedia

    en.wikipedia.org/wiki/Tor_(network)

    Tor, short for The Onion Router, is free and open-source software for enabling anonymous communication. It directs Internet traffic via a free, worldwide volunteer overlay network that consists of more than seven thousand relays. Using Tor makes it more difficult to trace a user's Internet activity.