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macOS High Sierra slow boot up

ignaciobarrena

macrumors regular
Original poster
Dec 25, 2016
178
56
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”
 
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nmeed

macrumors 6502
Dec 1, 2014
438
130
I noticed that as well, I'm hoping it's indexing or something.
 
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ashleykaryl

macrumors 6502
Jul 22, 2011
330
115
UK
Me too. It's doubled my startup time to around 50 seconds. Actually I can see now that it has disabled TRIM.
[doublepost=1507238353][/doublepost]Update: Just re-enabled trim and it restarted in 15 seconds.
 
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TszChun.Anson

macrumors newbie
Sep 28, 2017
4
0
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...
 
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ignaciobarrena

macrumors regular
Original poster
Dec 25, 2016
178
56
Me too. It's doubled my startup time to around 50 seconds. Actually I can see now that it has disabled TRIM.
[doublepost=1507238353][/doublepost]Update: Just re-enabled trim and it restarted in 15 seconds.
How did you do it ? TRIM is enabled in MBP (by default of course)
 
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ashleykaryl

macrumors 6502
Jul 22, 2011
330
115
UK
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.


 
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h9826790

macrumors G5
Apr 3, 2014
14,957
7,323
Hong Kong
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.



He has stock Apple SSD, cannot disable TRIM.
 
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ashleykaryl

macrumors 6502
Jul 22, 2011
330
115
UK
He has stock Apple SSD, cannot disable TRIM.

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.
 
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allanfries

macrumors 6502a
Jun 18, 2013
552
169
Canada
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?
 
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ONG

macrumors newbie
Nov 3, 2011
13
0
I am having the same issue! It takes about 50 seconds to boot up. It was 15!

Now I regret that I updated.
 
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ONG

macrumors newbie
Nov 3, 2011
13
0
I don't know if anybody having this problem but my copy/paste is broken.

I can not copy and paste anything on my mac.

I tried everything, couple of reboots, resetting nvram and smc, cleaning caches... None worked.

What kind of update is this??!
 
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Netman

macrumors newbie
Sep 6, 2017
26
11
Also long boot time seen in my iMac 2010 run by 10.13.x
 
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atlatnesiti

Suspended
Sep 4, 2008
839
212
Sydney, Australia
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?
 
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jminnihan

macrumors newbie
Dec 1, 2016
2
1
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?
 
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allanfries

macrumors 6502a
Jun 18, 2013
552
169
Canada
Hoping a future update will correct this. Not the end of the world but annoying none the less.
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.
 
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jawa12083

macrumors member
Feb 9, 2010
84
4
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?

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”.
 
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coding4lif3

macrumors newbie
Dec 21, 2017
2
2
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!
 
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h9826790

macrumors G5
Apr 3, 2014
14,957
7,323
Hong Kong
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.
 
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coding4lif3

macrumors newbie
Dec 21, 2017
2
2
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!!
 
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haralds

macrumors 65816
Jan 3, 2014
1,496
508
Silicon Valley, CA
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.
 
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JaySCT

macrumors newbie
Apr 14, 2009
16
3
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??
 
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