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Apple Computing Products:
macOS - Operating System
The slowest 2017 iMac on Earth - How to diagnose which is the issue?
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<blockquote data-quote="jpdemers" data-source="post: 1838134" data-attributes="member: 117810"><p>Mojave and Catalina assume the presence of an SSD, and have been optimized for that sort of fast I/O. In particular, there's a lot of swapping between RAM and the drive, and virtual memory is used extensively. Combine that with an old, slow, and possibly failing HD - the very opposite of what the OS is expecting - and it's not hard to imagine a system that slows to a crawl when it attempts to use the drive for what should be routine operations.</p></blockquote><p></p>
[QUOTE="jpdemers, post: 1838134, member: 117810"] Mojave and Catalina assume the presence of an SSD, and have been optimized for that sort of fast I/O. In particular, there's a lot of swapping between RAM and the drive, and virtual memory is used extensively. Combine that with an old, slow, and possibly failing HD - the very opposite of what the OS is expecting - and it's not hard to imagine a system that slows to a crawl when it attempts to use the drive for what should be routine operations. [/QUOTE]
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Apple Computing Products:
macOS - Operating System
The slowest 2017 iMac on Earth - How to diagnose which is the issue?
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