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2. Classic Mac OS memory management - Wikipedia

   en.wikipedia.org/wiki/Classic_Mac_OS_memory...

   "About This Computer" Mac OS 9.1 window showing the memory consumption of each open application and the system software itself. Historically, the classic Mac OS used a form of memory management that has fallen out of favor in modern systems. Criticism of this approach was one of the key areas addressed by the change to Mac OS X.

3. Macintosh File System - Wikipedia

   en.wikipedia.org/wiki/Macintosh_File_System

   In Mac OS 7.6.1, Apple removed support for writing to MFS volumes “as such writes often resulted in errors or system hangs”, [3] and in Mac OS 8.0 support for MFS volumes was removed altogether. Although macOS (formerly Mac OS X) has no built-in support for MFS, an example VFS plug-in from Apple called MFSLives provides read-only access to ...

4. File system fragmentation - Wikipedia

   en.wikipedia.org/wiki/File_system_fragmentation

   For some time after creation, files can be laid out near-optimally. When the operating system and applications are installed or archives are unpacked, separate files end up occurring sequentially so related files are positioned close to each other. As existing files are deleted or truncated, new regions of free space are created.

5. Core Storage - Wikipedia

   en.wikipedia.org/wiki/Core_Storage

   Core Storage is a logical volume management system on macOS that was introduced by Apple to Mac OS X Lion. Core Storage is a layer between the disk partition and the file system. [1] Core Storage is the basis for Apple's Fusion Drive technology, [2] which presents several partitions on multiple drives as a single logical volume.

6. Time formatting and storage bugs - Wikipedia

   en.wikipedia.org/wiki/Time_formatting_and...

   An issue in the Mac version of Sierra's Creative Interpreter (Mac SCI) would cause the game to "lock-up" when attempting to handle a delay due to a problem involving an overflow. Mac SCI would attempt to use the date to determine how long a delay should last by getting the current time in seconds since 1 January 1904, the Macintosh epoch (see ...

7. 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 ...

8. Restart the computer and close programs on Mac - AOL Help

   help.aol.com/articles/restart-the-computer-and...

   Note: Wait for 20 seconds, and then turn on the computer. 2. On the keyboard, hold down the Command and Option keys, and then tap the esc key. In the Force Quit Applications window, click any program other than Finder to highlight it, and then click Force Quit. 3.

9. Fusion Drive - Wikipedia

   en.wikipedia.org/wiki/Fusion_Drive

   Fusion Drive remains available in subsequent models of these computers, but was not expanded to other Apple devices: the latest MacBook and Mac Pro models use exclusively flash storage, and while this was an optional upgrade for the mid-2012 non-Retina MacBook Pro discontinued by Apple, it replaced the standard hard disk drive in October 2021 ...