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macOS High Sierra slow boot up

JaySCT said:
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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1) check if your OWC SSD really support TRIM (some of them do not), if NOT, then disable it. Enjoy the normal speed.

2) unless your daily usage is mainly keep rebooting the Mac. Then usually slower boot with TRIM work better.

3) if your Mac shows another abnormalities, then keep TRIM disabled may help. In my case, TRIM can cause Finder micro freeze. Or even an internal HDD disappear after warm reboot (only in HS).
 
Had the High Sierra long boot issue. 50+ seconds. Google led me here.

What I did:
Check TRIM status for my 250GB Samsung SSD. Stated "Enabled".
Reenabled anyway with the terminal command. Reboot.

Now im back to 16 seconds boot. :)
 
Jumme_Cph said:
Had the High Sierra long boot issue. 50+ seconds. Google led me here.

What I did:
Check TRIM status for my 250GB Samsung SSD. Stated "Enabled".
Reenabled anyway with the terminal command. Reboot.

Now im back to 16 seconds boot. :)
Click to expand...

I am planning to upgrade to High Sierra on my Samsung SM951 and I use Trim enabler in Sierra. I'll appreciate if you can tell the terminal command for trim so that I can avoid this slow boot issue. Thanks
 
Jumme_Cph said:
Had the High Sierra long boot issue. 50+ seconds. Google led me here.

What I did:
Check TRIM status for my 250GB Samsung SSD. Stated "Enabled".
Reenabled anyway with the terminal command. Reboot.
Click to expand...

Thanks for terminal command and the link. One question: if your SSD stated "Trim Enabled" why did you Reenabled the trimforce and I am still confused how did it help when everybody is thinking that slowing is related to enabling Trim.
 
krishnaM said:
Thanks for terminal command and the link. One question: if your SSD stated "Trim Enabled" why did you Reenabled the trimforce and I am still confused how did it help when everybody is thinking that slowing is related to enabling Trim.
Click to expand...

I think no one on this forum really knows "why", but just know re-enable TRIM (even though it's already enabled) may able to fix the issue. In fact, I didn't see anyone can explain how TRIM related to slow boot yet.

I tested on my own Mac, poor that doesn't work to me. But I can keep re-enabling TRIM as many times as I want without any side effect. IMO, it's a very simple and safe procedure, worth to try. (For info, disable TRIM can fix slow boot on my Mac. But single, double, triple... enable TRIM...still slow boot)
 
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ashleykaryl said:
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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Thank you. Mac user since 2009 and am just setting up a 2016 Macbook Pro with High Sierra. Appreciate all of the input here guys.
 
After Upgrading from Sierra to High Sierra I had a boot up time of 2 min 45 sec! It's a Mac mini (2012) with 1TB Samsung SSD. I had do disable Trim manually as described here in previous posts to speedup booting to 'normal' 35 sec.
 
atlatnesiti said:
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?
Click to expand...
[doublepost=1523575803][/doublepost]I have the same problem. Disabled trimforce, that didn't cure it, re-enabled trimforce, removed all startup items, still no good. Even Root (which starts up nothing) took a long time, ~ 5 min to boot.
 
jminnihan said:
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?
Click to expand...

Install Mavericks and boot in 2 seconds!

Very stable, fast ! Use parallels to virtualize windows or osx 10.13 LOL!
 
AdolfoPD said:
Install Mavericks and boot in 2 seconds!

Very stable, fast ! Use parallels to virtualize windows or osx 10.13 LOL!
Click to expand...
I do have the verbose option enabled on my 2015 I5 2.5 GHz laptop, and I noticed a couple of errors, but they flashed by too fast to read. The login screen comes up after a few seconds, but after that, I can boil water and brew a cup of tea before the danged thing finishes booting. Under Sierra, it booted fully in < 45 seconds from my 500 gb ssd drive. Very annoying. Even my antique PPC G4 boots faster from a SSD, and it is only 400 mHz.
 
Starman535 said:
I do have the verbose option enabled on my 2015 I5 2.5 GHz laptop, and I noticed a couple of errors, but they flashed by too fast to read. The login screen comes up after a few seconds, but after that, I can boil water and brew a cup of tea before the danged thing finishes booting. Under Sierra, it booted fully in < 45 seconds from my 500 gb ssd drive. Very annoying. Even my antique PPC G4 boots faster from a SSD, and it is only 400 mHz.
Click to expand...

There is a new OS out now. Anybody know if the slow boot from a Samsung SSD is cured with this update?
 
Yes currently, now that I'm running macOS Mojave, the boot time is still slow compared to the 9 sec boot up I had in macOS Sierra. All started with High Sierra which gave me a 28 sec boot time. Turning off trim does fix the issue, but who wants to leave that off. So just leaving it, as 28 sec boot up is not the end of the world.
 
Crap. My 2.5 GHz macbook takes about 15 sec to get to the login screen, then 5 min or so to finish after signing in on High Sierra. I have trim disabled currently, but leaving it on didn't cure the problem. My antique PPC G4 Dual-450 MHz takes about a minute start to finish to boot on an identical Samsung 500 Gb SSD. Never though my old PPC would be faster than my much newer laptop at anything.
 
allanfries said:
Yes currently, now that I'm running macOS Mojave, the boot time is still slow compared to the 9 sec boot up I had in macOS Sierra. All started with High Sierra which gave me a 28 sec boot time. Turning off trim does fix the issue, but who wants to leave that off. So just leaving it, as 28 sec boot up is not the end of the world.
Click to expand...

I tried going to Mojave on my laptop, but it left me with a brick. ALL account passwords were corrupted, so I can't even log in as root. I guess I need to restore OS-X High Sierra from backup.
 
I swapped out the 500 Gb Samsung SSD for a Seagate 1-Tb regular HD, and I'm back up on Mojave 10.14.2. Thanks for asking, though. Seems Apple hated Samsung SSD's. Mojave simply would not work properly on it, although, the last High Sierra Security update seemed to cure the slow-boot, at least temporarily.
 
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