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On a Mac, in what circumstances does write caching apply, an

March 8, 2019 at 10:27:14
Specs: Macintosh
For example:

1. Does write caching apply whenever any writing is involved? Or only when a file is edited? Does write caching apply when a file is being copied?

2. Is the write cache flushed only when shutting down? Does it happen on putting the computer to sleep? Does it happen when logging out of a user account? Does it happen at other times, e.g. when there's not much happening on the computer?

See More: On a Mac, in what circumstances does write caching apply, an

March 9, 2019 at 09:24:00
I run Mac systems mostly these days; but never investigated the write caching...

Perhaps this info from Apple-land may be of help?

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March 9, 2019 at 10:17:55
Thanks for your reply, trvlr, but the article is about content caching, which as far as I can make out is a quite different thing from write caching.

Any more for the skylark?

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March 9, 2019 at 10:44:32
I did a couple of other google trawls, using these two strings:

what is write caching?

is write cache flushed when shutting down?

The majority of hits refer of course to windows - currently win-1o inevitably.
perhaps repeat my trawls an have read even though most (all?) are windows related?

They do contain useful info and also some solid warnings...

And via another trawl - not specific to this post I found this:

which includes reference to cache flushing when shutting down (or not) an Mac system.

Personally I think it's flushed on shut down; unless there is an option to disallow it?.

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