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  2. Apple Disk Image - Wikipedia

    en.wikipedia.org/wiki/Apple_Disk_Image

    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 formats, including the Universal Disk Image Format (UDIF) from Mac OS X and the New Disk Image Format (NDIF) from Mac OS 9.

  3. Hard Disk 20 - Wikipedia

    en.wikipedia.org/wiki/Hard_Disk_20

    The Hard Disk 20 (or HD20, as it was known colloquially) contains a 20 MB 3.5" Rodime hard disk which provides over 50 times the data storage of the stock 400 kB disk drive. At the time when the average file size was around 10-20 kB and due to the vast number of those files the HD20 can contain, Apple's original Macintosh File System , which ...

  4. Apple Icon Image format - Wikipedia

    en.wikipedia.org/wiki/Apple_Icon_Image_format

    The Apple Icon Image format (.icns) is an icon format used in Apple Inc.'s macOS. It supports icons of 16 × 16, 32 × 32, 48 × 48, 128 × 128, 256 × 256, 512 × 512 points at 1x and 2x scale, with both 1- and 8-bit alpha channels and multiple image states (example: open and closed folders).

  5. HFS Plus - Wikipedia

    en.wikipedia.org/wiki/HFS_Plus

    In Mac OS X Leopard 10.5, directory hard-linking was added as a fundamental part of Time Machine. In Mac OS X Snow Leopard 10.6, HFS+ compression was added using Deflate (Zlib). In open source and some other areas this is referred to as AppleFSCompression or decmpfs. Compressed data may be stored in either an extended attribute or the resource ...

  6. List of portable software - Wikipedia

    en.wikipedia.org/wiki/List_of_portable_software

    Download QR code; Print/export ... for Mac OS X; IrfanView; Pixia; Tux Paint; Icon editors ... Visual maps of free space and biggest files and folders on hard drive ...

  7. Hierarchical File System (Apple) - Wikipedia

    en.wikipedia.org/wiki/Hierarchical_File_System...

    Hierarchical File System (HFS) is a proprietary file system developed by Apple Inc. for use in computer systems running Mac OS.Originally designed for use on floppy and hard disks, it can also be found on read-only media such as CD-ROMs.

  8. Mac OS 8 - Wikipedia

    en.wikipedia.org/wiki/Mac_OS_8

    Mac OS 8.5 was the first version of the Mac OS to support themes, or skins, which could change the default Apple Platinum look of the Mac OS to "Gizmo" or "HiTech" themes. This radical changing of the computer's appearance was removed at the last minute, and appeared only in beta versions, though users could still make (and share) their own ...

  9. DiskDoubler - Wikipedia

    en.wikipedia.org/wiki/DiskDoubler

    The original Classic Mac OS did not include any sort of composite icon support, so DiskDoubler had to copy and modify every icon it found and then hand those modified icons back to the Finder with a new file type. When a file was compressed, its (hidden) file type flag was changed to the one DiskDoubler "made up", making the Finder display the ...