i upgraded to the new complementary security focused update for High Sierra, but now the computer takes ñike 30-40 secs to boot up. Back in Sierra it took around 15 secs.
rMBP 2015 13”
rMBP 2015 13”
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macOS High Sierra slow boot up
- Thread starter ignaciobarrena
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My Macbook Pro 13" (late 2016), after updated to the supplemental update, became slow in boot-up. I checked whether the TRIM support is "Yes" in System Report page and the answer is yes. Then I shut down then restarted the computer, the boot-up time resumed normal...
Mine is a 3rd party drive from Samsung and Trim was enabled previously. The supplemental upgrade disabled it for some reason.
Go to terminal and type in: sudo trimforce enable
You will be asked to enter your password. Next, answer Y (for yes) to each of the following questions.
After a short delay the computer will reboot and Trim is enabled.
This video shows it neatly, but if it shows that Trim is enabled in the system report, it may not do anything.
Go to terminal and type in: sudo trimforce enable
You will be asked to enter your password. Next, answer Y (for yes) to each of the following questions.
After a short delay the computer will reboot and Trim is enabled.
This video shows it neatly, but if it shows that Trim is enabled in the system report, it may not do anything.
It's very likely his issue is caused by something else then. With Sierra I had start up times of around 25 seconds. There seemed to be no improvement with High Sierra following a clean install, but the supplemental upgrade it disabled Trim and made it worse. Now it's down to around 15 seconds after running that command in terminal and finally delivering the much vaunted faster startups.
My boot up time tripled from 9 seconds to 28 seconds after High Sierra install. Nothing changed with supplemental update either. Trim shows as enabled, and resetting SMC and NVRAM has done nothing. Other than the slow boot/restart, everything else performs as before or noticeably better. Confused?
My problem with slow boot time only appeared after latest so cooled supplemental update.
Go and figure...
Going from bad to worse, I’m afraid...
quick update;
Unfurtunetely “sudo disable trim”didn’t work for me
Reanabled becouse the same - long boot times...
Any other suggestions?
Go and figure...
Going from bad to worse, I’m afraid...
quick update;
Unfurtunetely “sudo disable trim”didn’t work for me
Reanabled becouse the same - long boot times...
Any other suggestions?
Last edited:
Did some start up research on macOS High Sierra 10.13.2 (release) and on my 2017 MacBook Pro 15" TouchBar Core i7 3.1 GHz laptop, it takes about 12 seconds for the first half of the progress bar, then anywhere from 48 seconds to 1 minute 8 seconds to fill it and show the login screen. Using verbose mode (Command - V) pressed at startup, the delay seems to be where the Apple Key Store is initialized and accessed. If this is accessing the Keychain database, I wonder if some of us require a database rebuild. Anyone else see this?
Yeah, 2 weeks ago I turned Trim off and my boot up/restart time was back to 9 seconds. Now that I have updated to 10.13.2, I may turn it back on to see if this nonsense is fixed.
Did you ever figure anything out related to this? Mine looks like it is slowing down on the same thing. None of the options in the other thread linked above is working.
I’m on a 2015 MacBook Pro Retina 13”.
Unfortunately I have the same issue on a MacBook Pro 15 2017.
I don't understand why the boot time is very slow compared to my Windows 10 work Notebook....!
Any ideas?
Cheers!
It’s TRIM issue, not 100% sure if APFS related. But seems APFS + TRIM is the worst combination, and have high chance trigger this slow boot issue.
You’re right!!!
I forced and reenabled the TRIM successfully and now it works like a charm.
it’s very strange because usually I always have this problem on an old iMac late 2011 upgraded with a Samsung ssd.
So I didn’t expect to have this issue on the latest MacBook Pro with official Apple ssd.
That’s very much for your help!!
I switched back to running HFS Plus on my SSD and at least under 10.13.1 it cured the slow boot issue I had (3:20 min!) Took a bit to reinstall things. I am staying with 10.13.1 to avoid sleep issues.
Just updated my 15" Retina early 2013 Macbook Pro to 10.13.2 from El Capitan and immediately noticed slower boot. I have an OWC SSD in place. I had backed up El Cap to the original Apple module, updated to HS, reinstalled the OWC and then I could install HS on OWC module.. :-(
I've had been running Disk Sensei for Trim with El Cap.. With it turned off, my boot time is as fast (if not faster) than with El Capitan... With Trim turned on in Disk Sensei, I get the extended start up. Once things are up and running, everything seems to be at normal speed, so not sure which is a better solution.. Faster boot and no TRIM (thought APFS somewhat eliminates as much of a need), or slower boot and TRIM??
I've had been running Disk Sensei for Trim with El Cap.. With it turned off, my boot time is as fast (if not faster) than with El Capitan... With Trim turned on in Disk Sensei, I get the extended start up. Once things are up and running, everything seems to be at normal speed, so not sure which is a better solution.. Faster boot and no TRIM (thought APFS somewhat eliminates as much of a need), or slower boot and TRIM??