Improve macOS Catalina boot time with terminal

One of the significant differences of macOS compared to other operating systems is the time it takes to start when the equipment is off. In any case, for some time towards this part, the operating system ofos Mac takes longer and longer.

It is true that today that dependence on a Mac has been reduced compared to other devices, and these replace the small actions, leaving the Mac for "hard work", but we would also like it to start as an iPad, since it has similar hardware.

Be that as it may, as indicated in different forums, one of the differences with respect to macOS Mojave is the time it takes to boot. This time is reduced when the operating system is more debugged, towards the spring. In any case, in I'm from Mac we have done the test with macOS Catalina installed on a 2017 MacBook Pro with an i5 processor and later after performing the clearing some caches. These actions should improve system boot in general and applications in particular.

To do this, we turned off the Mac completely, turned it on and after setting the boot password the system took 31 seconds until he showed the desk. AfterWe open Terminal, and clear caches that prevent the correct startup of the system and applications, with these two commands:

sudo update_dyld_shared_cache -debug

sudo update_dyld_shared_cache -force

Terminal may ask us to enter the password, in that case we enter it. After that, we turn off the system or restart it. Now the system has been slow 29 seconds in starting. It is not a very significant difference, but at least we will have our system something more "clean" to avoid future problems.

As we said at the beginning, before our Macs started somewhat faster. If we take as an example my old MacBook Pro from 2011 that still works perfectly (I have only changed the memory for an SSD memory), this process does it in 14 to 15 seconds, with the latest operating system you can have, macOS High Sierra.

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