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Problem slow boot with apfs on ssd external

Hi

I have a problem with apfs on my ssd external that I use for boot.

With High Sierra and both Mojave, booting from external ssd apfs is long (2 or 3 minutes)

Using HFS Journaled in High Sierra the boot is about 20"... But with Mojave it isn't possible using HFS.


So, the problem is APFS with external SSD


Any solutions?

Thanks

iMac, macOS Mojave (10.14), iMac 21,5'' 2018

Posted on Sep 27, 2018 1:21 AM

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Question marked as Top-ranking reply

Posted on Oct 1, 2018 7:31 AM

The only fix I found is a thunderbolt enclosure for the SSD. Got mine today and boot time is normal, now.
The problem occurs before the Apple logo shows up. It took up to 4 minutes before the logo shows. After that boot time was about 30-40 seconds. With the thunderbolt enclosure it is between 10 to 30 seconds until Apple logo and another 10 to 20 seconds boot time. There have to be some changes with the USB boot loader, because it takes the same amount of time, if I press the ALT key while powering up --- up to 4 minutes with the USB SSD enclosure and a few seconds with the thunderbolt enclosure. Apple, it's time for a fix! I had to spend 106 Euros for a simple enclosure for my System SSD which worked just fine before Mojave!

45 replies

Problem slow boot with apfs on ssd external

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